MESON Chess Problem Database
Problem Display
PID: 71858 (8/1p2N2p/1n4pP/1K4QP/1P1pk2r/4ppRN/2Pn4/6BB w - - 0 1)
Lever, TP
Chess, 1952
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxh3
- 2.Rg4#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rxh5
- 2.Rg4#
- 1...Sb1
- 2.Bxf3#
- 1...Sf1
- 2.Bxf3#
- 1...Sb3
- 2.Bxf3#
- 1...Sdc4
- 2.Bxf3#
- 1...Sa4
- 2.Qd5#
- 1...Sbc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e2
- 2.Sf2#
- 1...d3
- 2.Qxe3#
- 1...gxh5
- 2.Qf5#
- 1...Rxh3
- Tries
- 1.Kxb6?
- threat
- 2.Qd5#
- 1...Rxh3
- 2.Rg4#
- 1...Rxh5
- 2.Rg4#
- 2.Qf4#
- 1...Sc4+!
- threat
- 1.Bf2?
- 1...Rxh3
- 2.Rg4#
- 1...Rxh5
- 2.Rg4#
- 1...exf2
- 2.Sxf2#
- 1...gxh5
- 2.Qf5#
- 1...d3
- 2.Qxe3#
- 1...Sbc4
- 2.Qd5#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Sb1
- 2.Bxf3#
- 1...Sf1
- 2.Bxf3#
- 1...Sb3
- 2.Bxf3#
- 1...Sdc4
- 2.Bxf3#
- 1...Sa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e2!
- 1...Rxh3
- 1.Bh2?
- 1...Rxh3
- 2.Rg4#
- 1...Rxh5
- 2.Rg4#
- 1...gxh5
- 2.Qf5#
- 1...Sbc4
- 2.Qd5#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Sb1
- 2.Bxf3#
- 1...Sf1
- 2.Bxf3#
- 1...Sb3
- 2.Bxf3#
- 1...Sdc4
- 2.Bxf3#
- 1...Sa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e2
- 2.Sf2#
- 1...d3!
- 1...Rxh3
- 1.Bxe3?
- threat
- 2.Sf2#
- 1...Rxh3
- 2.Rg4#
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...dxe3!
- threat
- 1.Bg2?
- 1...Rxh3
- 2.Rg4#
- 1...Rxh5
- 2.Rg4#
- 1...gxh5
- 2.Qf5#
- 1...d3
- 2.Qxe3#
- 1...Sbc4
- 2.Qd5#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Sb1
- 2.Bxf3#
- 1...Sf1
- 2.Bxf3#
- 1...Sb3
- 2.Bxf3#
- 1...Sdc4
- 2.Bxf3#
- 1...Sa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e2
- 2.Sf2#
- 1...fxg2!
- 1...Rxh3
- 1.Rxf3?
- threat
- 2.Rxe3#
- 2.Rf4#
- 1...d3
- 2.Rf4#
- 2.Qxe3#
- 1...Rf4
- 2.Rxe3#
- 2.Rxf4#
- 2.Qxf4#
- 1...e2
- 2.Sf2#
- 2.Re3#
- 2.Rf4#
- 1...Sxf3!
- threat
- 1.Qf6?
- threat
- 2.Sg5#
- 2.Qe6#
- 1...Rxh3
- 2.Rg4#
- 1...Sbc4
- 2.Sg5#
- 1...Rg4
- 2.Rxg4#
- 2.Qe6#
- 1...Sdc4
- 2.Sg5#
- 2.Bxf3#
- 1...Sd7
- 2.Sg5#
- 1...d3
- 2.Sg5#
- 1...g5
- 2.Sxg5#
- 2.Qf5#
- 2.Qe6#
- 1...Rxh5+!
- threat
- 1.Qxg6+?
- 1...Ke5
- 2.Rg5#
- 1...hxg6!
- 1...Ke5
- 1.hxg6?
- threat
- 2.Qf5#
- 1...d3
- 2.Qxe3#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Rg4#
- 1...hxg6!
- threat
- 1.Kxb6?
- Keys
- 1.Qc5!
- 1...Rxh3
- 2.Rg4#
- 1...Rxh5
- 2.Rg4#
- 1...gxh5
- 2.Qf5#
- 1...Sd5
- 2.Qxd5#
- 1...Sbc4
- 2.Qd5#
- 1...Rf4
- 2.Sg5#
- 1...Rg4
- 2.Rxg4#
- 1...Sb1
- 2.Bxf3#
- 1...Sf1
- 2.Bxf3#
- 1...Sb3
- 2.Bxf3#
- 1...Sdc4
- 2.Bxf3#
- 1...Sa4
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e2
- 2.Qxd4#
- 1...d3
- 2.Qxe3#
- 1...g5
- 2.Qf5#
- 1...Rxh3
- 1.Qc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD,XS(E)::R(D)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD::R(D),XR(f)
- R(f);N_GUARD,P_PINQ(H),XP(I)::R(D)
- S(a);N_GUARD::B(B),XP(c)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(b);N_GUARD::S(E)
- P(d);N_GUARD::QAR1(H),XP(b)
- P(h);N_GUARD,XP(I)::QAB1(H)
- Tries
- Try
- K(G);P-FLIGHT,XS(g)
- Threat
- QAB1(H)
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- Refutation
- S(a);CHECK
- Try
- B(A);
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- R(f);N_GUARD,P_PINQ(H),XP(I)::R(D)
- P(b);XB(A)::S(E),XP(b)
- P(h);N_GUARD,XP(I)::QAB1(H)
- P(d);N_GUARD::QAR1(H),XP(b)
- S(g);N_GUARD::QAB1(H)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD::R(D),XR(f)
- S(a);N_GUARD::B(B),XP(c)
- S(g);N_GUARD::QAB1(H),XS(g)
- Refutation
- P(b);
- Try
- B(A);
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- R(f);N_GUARD,P_PINQ(H),XP(I)::R(D)
- P(h);N_GUARD,XP(I)::QAB1(H)
- S(g);N_GUARD::QAB1(H)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD::R(D),XR(f)
- S(a);N_GUARD::B(B),XP(c)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(b);N_GUARD::S(E)
- Refutation
- P(d);
- Try
- B(A);XP(b)
- Threat
- S(E)
- Vars
- R(f);N_GUARD::QAR1(H),XR(f)
- Refutation
- P(d);XB(A)
- Try
- B(B);
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- R(f);N_GUARD,P_PINQ(H),XP(I)::R(D)
- P(h);N_GUARD,XP(I)::QAB1(H)
- P(d);N_GUARD::QAR1(H),XP(b)
- S(g);N_GUARD::QAB1(H)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD::R(D),XR(f)
- S(a);N_GUARD::B(B),XP(c)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(b);N_GUARD::S(E)
- Refutation
- P(c);N_SPINP(c),XB(B)
- Try
- R(D);XP(c)
- Threat
- DUALS(2)
- Refutation
- S(a);P_SPINS(a),XR(D)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- S(g);::S(E)
- P(d);::S(E)
- Refutation
- R(f);CHECK,XP(I)
- Try
- Q(H);CHECK,XP(h)
- Vars
- K(e);N_SPINP(c),P-FLIGHT::R(D)
- Refutation
- P(j);XQ(H)
- Try
- P(I);XP(h)
- Threat
- QAB1(H)
- Vars
- P(d);N_GUARD::QAR1(H),XP(b)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD,P_PINQ(H)::R(D)
- Refutation
- P(j);XP(I)
- Try
- Actual
- Q(H);
- Vars
- R(f);N_GUARD,XS(E)::R(D)
- R(f);N_GUARD,P_PINQ(H),XP(I)::R(D)
- P(h);N_GUARD,XP(I)::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- S(g);N_GUARD::QAB1(H)
- R(f);SBLOCK::S(E)
- R(f);N_GUARD::R(D),XR(f)
- S(a);N_GUARD::B(B),XP(c)
- P(b);::QAR1(H),XP(d)
- P(d);OGATE::QAR1(H),XP(b)
- P(h);N_GUARD::QAB1(H)
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).