MESON Chess Problem Database
Problem Display
PID: 152305 (B5b1/R5P1/1pp1p2K/1Qp1Pk2/2NR4/8/1p2N1n1/7n w - - 0 1)
de Ruwe, JS
Good Companions (October), 1915
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bf7
- 2.Rxf7#
- 1...Bh7
- 2.Rf7#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...b1Q
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Bf7
- Tries
- 1.Bxc6?
- 1...Sf4
- 2.Rxf4#
- 1...b1Q
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Bf7
- 2.Rxf7#
- 1...Bh7
- 2.Rf7#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sh4
- 2.Rf4#
- 1...cxd4!
- 1...Sf4
- 1.Re4?
- threat
- 2.Sd6#
- 1...Sf4
- 2.Rxf4#
- 1...Kxe4!
- threat
- 1.Rh4?
- 1...cxb5
- 2.Be4#
- 1...Sf4
- 2.Rxf4#
- 1...b1Q
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Bf7
- 2.Rxf7#
- 1...Bh7
- 2.Rf7#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sxh4!
- 1...cxb5
- 1.Qxb2?
- threat
- 2.Qb1#
- 2.Qc2#
- 1...Sf4
- 2.Rxf4#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...cxd4!
- threat
- 1.Qb3?
- threat
- 2.Qc2#
- 2.Qd3#
- 2.Qh3#
- 1...Sf4
- 2.Rxf4#
- 1...b1Q
- 2.Qxb1#
- 2.Qh3#
- 1...b1B
- 2.Qxb1#
- 2.Qh3#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 2.Qh3#
- 1...Se3
- 2.Rf4#
- 2.Qd3#
- 1...cxd4!
- threat
- 1.Qxc5?
- threat
- 2.Sd6#
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...bxc5!
- threat
- 1.Qxb6?
- 1...Sf4
- 2.Rxf4#
- 1...b1Q
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Bf7
- 2.Rxf7#
- 1...Bh7
- 2.Rf7#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sh4
- 2.Rf4#
- 1...cxd4!
- 1...Sf4
- 1.Bxc6?
- Keys
- 1.Kh5!
- 1...Bf7+
- 2.Rxf7#
- 1...Sg3+
- 2.Sxg3#
- 1...Sf4+
- 2.Rxf4#
- 1...cxd4
- 2.Sd6#
- 1...cxb5
- 2.Be4#
- 1...b1Q
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Bh7
- 2.Rf7#
- 1...Sf2
- 2.Sg3#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sh4
- 2.Rf4#
- 1...Bf7+
- 1.Kh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(i);N_GUARD::R(G),XB(i)
- B(i);N_GUARD::R(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::R1(C)
- S(c);N_GUARD::R1(C),XS(c)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XS(b)
- P(b);OGATE::QAB(D),XB(b)
- P(b);OGATE::QAB(D),XR(b)
- Tries
- Try
- B(I);XP(g)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XS(b)
- P(b);OGATE::QAB(D),XB(b)
- P(b);OGATE::QAB(D),XR(b)
- B(i);N_GUARD::R(G),XB(i)
- B(i);N_GUARD::R(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::R1(C)
- Refutation
- P(d);XR(C)
- Try
- R(C);
- Threat
- S(B)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- Refutation
- K(e);P_SPINP(g),S_FLIGHT,XR(C)
- Try
- R(C);
- Vars
- P(g);OGATE,XQ(D)::B(I)
- S(c);N_GUARD::R1(C),XS(c)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XS(b)
- P(b);OGATE::QAB(D),XB(b)
- P(b);OGATE::QAB(D),XR(b)
- B(i);N_GUARD::R(G),XB(i)
- B(i);N_GUARD::R(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::R1(C)
- Refutation
- S(c);XR(C)
- Try
- Q(D);XP(b)
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::R1(C)
- Refutation
- P(d);XR(C)
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);XR(C)
- Try
- Q(D);XP(d)
- Threat
- S(B)
- Refutation
- P(f);XQ(D)
- Try
- Q(D);XP(f)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XS(b)
- P(b);OGATE::QAB(D),XB(b)
- P(b);OGATE::QAB(D),XR(b)
- B(i);N_GUARD::R(G),XB(i)
- B(i);N_GUARD::R(G)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(c);N_GUARD::R1(C)
- Refutation
- P(d);XR(C)
- Try
- Actual
- K(F);P-FLIGHT
- Vars
- B(i);CHECK,N_GUARD::R(G),XB(i)
- S(a);CHECK,N_GUARD::S(A),XS(a)
- S(c);CHECK,N_GUARD::R1(C),XS(c)
- P(d);XR(C)::S(B)
- P(g);OGATE,XQ(D)::B(I)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XS(b)
- P(b);OGATE::QAB(D),XB(b)
- P(b);OGATE::QAB(D),XR(b)
- B(i);N_GUARD::R(G)
- S(a);N_GUARD::S(A)
- S(c);N_GUARD::R1(C)
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).