MESON Chess Problem Database
Problem Display
PID: 137325 (8/1p2pp2/1n2nR1p/3kPRpN/rp2b1K1/1P1N4/1B3P2/2Q4B w - - 0 1)
Stillingfleet Johnson, George
Australasian Chess Magazine, 1920
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Bxh1
- 2.Qxh1#
- 1...Bg2
- 2.Bxg2#
- 1...Bf3+
- 2.Bxf3#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...exf6
- 2.Sxf6#
- 1...Ra1
- Tries
- 1.Kg3?
- 1...Bxh1
- 2.Qxh1#
- 1...exf6
- 2.Sxf6#
- 1...Bg2
- 2.Bxg2#
- 1...Bf3
- 2.Bxf3#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...g4!
- 1...Bxh1
- 1.Sg3?
- threat
- 2.Bxe4#
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...Bg2
- 2.Bxg2#
- 1...Sc5
- 2.Qxc5#
- 1...h5+!
- threat
- 1.Shf4+?
- 1...Sxf4
- 2.Qc5#
- 1...gxf4!
- 1...Sxf4
- 1.Bg2?
- 1...Bf3+
- 2.Bxf3#
- 1...exf6
- 2.Sxf6#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Bxg2!
- 1...Bf3+
- 1.Bf3?
- 1...exf6
- 2.Sxf6#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Bxf3+!
- 1...exf6
- 1.Ba1?
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...exf6
- 2.Sxf6#
- 1...Bg2
- 2.Bxg2#
- 1...Sc4
- 2.Qxc4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Rxa1!
- 1...Bf3+
- 1.Rf4?
- threat
- 2.Bxe4#
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...Sxf4
- 2.Qc5#
- 1...Bg2
- 2.Bxg2#
- 1...Sc5
- 2.Qxc5#
- 1...gxf4!
- threat
- 1.Rxg5?
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...Sxg5
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...exf6
- 2.Sxf6#
- 1...Bg2
- 2.Bxg2#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...Sf4
- 2.Sdxf4#
- 2.Shxf4#
- 2.Qc5#
- 1...Sc5
- 2.Sdf4#
- 2.Shf4#
- 2.Qxc5#
- 1...Sc7
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...Sg7
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...Sd8
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...Sf8
- 2.Sdf4#
- 2.Shf4#
- 2.Qc5#
- 1...hxg5!
- 1...Bf3+
- 1.Rxh6?
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...Bg2
- 2.Bxg2#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...f6!
- 1...Bf3+
- 1.Qc2?
- 1...Bf3+
- 2.Bxf3#
- 1...exf6
- 2.Sxf6#
- 1...Bg2
- 2.Bxg2#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Bxh1!
- 1...Bf3+
- 1.Qc7?
- threat
- 2.Qxb7#
- 1...Bf3+
- 2.Bxf3#
- 1...Ra7
- 2.Sxb4#
- 1...Sd4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 2.e6#
- 1...Sd8
- 2.Qc5#
- 2.e6#
- 1...Sxc7!
- threat
- 1.Qc8?
- threat
- 2.Qxb7#
- 1...Bf3+
- 2.Bxf3#
- 1...Ra7
- 2.Sxb4#
- 1...Sd4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd8
- 2.Qc5#
- 1...Sxc8!
- threat
- 1.f4?
- 1...Bf3+
- 2.Bxf3#
- 1...Bxh1
- 2.Qxh1#
- 1...Sxf4
- 2.Qc5#
- 1...exf6
- 2.Sxf6#
- 1...Bg2
- 2.Bxg2#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...gxf4!
- 1...Bf3+
- 1.Kg3?
- Keys
- 1.Rf3!
- 1...Bxf3+
- 2.Bxf3#
- 1...Bf5+
- 2.R3xf5#
- 1...Bxd3
- 2.Rxd3#
- 1...exf6
- 2.Sxf6#
- 1...Bg6
- 2.R3f5#
- 1...Bh7
- 2.R3f5#
- 1...Sc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxb4#
- 1...Ra2
- 2.Sxb4#
- 1...Ra3
- 2.Sxb4#
- 1...Ra5
- 2.Sxb4#
- 1...Ra6
- 2.Sxb4#
- 1...Ra7
- 2.Sxb4#
- 1...Ra8
- 2.Sxb4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sd4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Bxf3+
- 1.Rf3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::S(F),XP(b)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- B(c);OGATEB::B(B),XB(c)
- B(c);CHECK,OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- P(j);XR(K)::S(J),XP(j)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- P(e);
- Try
- S(J);
- Threat
- B(B),XB(c)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- B(c);OGATEB::B(B),XB(c)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- P(h);CHECK
- Try
- S(J);CHECK
- Vars
- S(g);XS(J)::QAR1(A)
- Refutation
- P(e);XS(J)
- Try
- B(B);
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- P(j);XR(K)::S(J),XP(j)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- B(c);N_SPINB(c),XB(B)
- Try
- B(B);
- Vars
- P(j);XR(K)::S(J),XP(j)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- B(c);CHECK,N_SPINB(c),XB(B)
- Try
- B(C);
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- R(a);XB(C)
- Try
- R(I);
- Threat
- B(B),XB(c)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- S(g);N_GUARD,XR(I)::QAR1(A)
- B(c);OGATEB::B(B),XB(c)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- P(e);XR(I)
- Try
- R(I);XP(e)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- Refutation
- P(h);XR(I)
- Try
- R(K);XP(h)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- P(k);
- Try
- Q(A);
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- B(c);N_SPINB(c),XB(B)
- Try
- Q(A);
- Threat
- QAB(A),XP(i)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- R(a);N_GUARD::S(F),XP(b)
- S(g);N_GUARD::QAR1(A)
- Refutation
- S(g);XQ(A)
- Try
- Q(A);
- Threat
- QAB(A),XP(i)
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- R(a);N_GUARD::S(F),XP(b)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- S(f);XQ(A)
- Try
- P(D);
- Vars
- B(c);CHECK,OGATEB::B(B),XB(c)
- B(c);N_SPINB(c),OGATE,XB(B)::QAB(A),XB(c)
- S(g);N_GUARD,XP(D)::QAR1(A)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B),XB(c)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- Refutation
- P(e);XP(D)
- Try
- Actual
- R(I);N_PINB(c)
- Vars
- B(c);CHECK,OGATE,P_SPINB(c),XR(I)::B(B),XB(c)
- B(c);CHECK,OGATEB::B(B)+R(I),XB(c)
- B(c);OGATE,XS(F)::B(B)+R(I),DCHECK,XB(c)
- P(j);XR(K)::S(J),XP(j)
- B(c);OGATEB::B(B)+R(I)
- S(f);N_GUARD::QAB1(A),XS(f)
- R(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(A)
- S(g);N_GUARD::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).