MESON Chess Problem Database
Problem Display
PID: 2613 (1B2N1B1/2r1p3/N1P5/3R4/2p1k1Pb/KnR1P1r1/b5P1/7Q w - - 0 1)
Perry, William E
Source?, 0000
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qxg2#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rxg4
- 2.g3#
- 1...Rxc6
- 2.Re5#
- 1...Ra7
- 2.Re5#
- 1...Rb7
- 2.Re5#
- 1...Rd7
- 2.Re5#
- 1...Rc8
- 2.Re5#
- 1...Bb1
- 2.Qxb1#
- 1...Bg5
- 2.Qh7#
- 1...Bf6
- 2.Qh7#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd2
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...e5
- 2.Sd6#
- 1...Rxg2
- Tries
- 1.Sf6+?
- 1...Bxf6
- 2.Qh7#
- 1...exf6!
- 1...Bxf6
- 1.Sexc7?
- threat
- 2.Bh7#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg4
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Sd4
- 2.Sc5#
- 1...Rxe3!
- threat
- 1.Bxc7?
- threat
- 2.Re5#
- 1...Rxg2
- 2.Qxg2#
- 1...Bf6
- 2.Qh7#
- 1...e5
- 2.Sd6#
- 2.Rxe5#
- 1...Rxe3!
- threat
- 1.Be6?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg4
- 2.g3#
- 1...Rxc6
- 2.Re5#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Ra7
- 2.Re5#
- 1...Rb7
- 2.Re5#
- 1...Rd7
- 2.Re5#
- 1...Rc8
- 2.Re5#
- 1...Bb1
- 2.Qxb1#
- 1...Bg5
- 2.Qh7#
- 1...Bf6
- 2.Qh7#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd2
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Rxe3!
- 1...Rxg2
- 1.Rxc4+?
- 1...Kxe3
- 2.Qe1#
- 1...Sd4!
- 1...Kxe3
- 1.Rd4+?
- 1...Ke5
- 2.Bxc7#
- 1...Sxd4!
- 1...Ke5
- 1.Qd1?
- threat
- 2.Bh7#
- 2.Qc2#
- 1...Rxg2
- 2.Bh7#
- 1...Rxg4
- 2.Qc2#
- 2.Qf3#
- 2.Qxg4#
- 1...Rxc6
- 2.Re5#
- 2.Qc2#
- 1...Sd4
- 2.Sc5#
- 2.Qxd4#
- 1...Rf3
- 2.Qc2#
- 2.Qxf3#
- 2.gxf3#
- 1...Bb1
- 2.Bh7#
- 2.Qxb1#
- 1...Sa1
- 2.Sc5#
- 2.Bh7#
- 2.Qd4#
- 1...Sc1
- 2.Sc5#
- 2.Bh7#
- 2.Qd4#
- 1...Sd2
- 2.Sc5#
- 2.Qc2#
- 1...Sc5
- 2.Sxc5#
- 2.Bh7#
- 2.Qd4#
- 1...e5
- 2.Sd6#
- 2.Qc2#
- 1...e6
- 2.Sd6#
- 1...Rxe3!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 2.Qf5#
- 1...Rxe3
- 2.Qf5#
- 1...Rxg4
- 2.Qf3#
- 2.Qf5#
- 1...Sd4
- 2.Sc5#
- 2.Qf4#
- 1...Rf3
- 2.Qxf3#
- 2.gxf3#
- 1...Bg5
- 2.Qf5#
- 1...e5
- 2.Sd6#
- 2.Qf5#
- 1...e6!
- threat
- 1.Sf6+?
- Keys
- 1.g5!
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.Qxh4#
- 1...Rxg5
- 2.g3#
- 2.g4#
- 1...Rxc6
- 2.Re5#
- 1...Bxg5
- 2.Qh7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sf6#
- 1...Sd4
- 2.Sc5#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Ra7
- 2.Re5#
- 1...Rb7
- 2.Re5#
- 1...Rd7
- 2.Re5#
- 1...Rc8
- 2.Re5#
- 1...Bb1
- 2.Qxb1#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd2
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Rxg2
- 1.g5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B),XR(c)
- R(c);OGATE,XP(F)::QAB(A)+P(B)
- R(g);XP(I)::R1(G)
- R(g);P_PINS(H)::R1(G)
- R(g);::R1(G)
- B(a);N_GUARD::QAB(A),XB(a)
- B(f);OGATE::QAB(A)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- P(h);N_GUARD::S(K)
- Tries
- Try
- S(K);CHECK
- Vars
- B(f);OGATE,XS(K)::QAB(A)
- Refutation
- P(h);XS(K)
- Try
- S(K);XR(g)
- Threat
- B(L)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XP(F)::QAB(A)+P(B)
- R(c);OGATE::P(B),XR(c)
- S(b);N_GUARD::S(H)
- Refutation
- R(c);XP(E)
- Try
- B(J);XR(g)
- Threat
- R1(G)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- B(f);OGATE::QAB(A)
- Refutation
- R(c);XP(E)
- Try
- B(L);
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XP(F)::QAB(A)+P(B)
- R(g);XP(I)::R1(G)
- R(c);OGATE::P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B),XR(c)
- R(g);P_PINS(H)::R1(G)
- R(g);::R1(G)
- B(a);N_GUARD::QAB(A),XB(a)
- B(f);OGATE::QAB(A)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- Refutation
- R(c);XP(E)
- Try
- R(D);CHECK,XP(d)
- Vars
- K(e);P-FLIGHT,XP(E)::QAR2(A)
- Refutation
- S(b);P_PINP(E),P_SPINS(b)
- Try
- R(G);CHECK
- Vars
- K(e);P-FLIGHT,P_SPINR(g)::B(J),XR(g)
- Refutation
- S(b);XR(G)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(c);XP(B)::B(L)
- P(h);N_GUARD::S(K)
- Refutation
- R(c);XP(E)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(c);XP(E)::QAB1(A)
- B(f);::QAB1(A)
- Refutation
- P(h);
- Try
- Actual
- P(F);
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);N_GUARD,XP(E)::QAR(A),XB(f)
- R(g);XP(I)::R1(G)
- B(f);OGATE,XP(F)::QAB(A)
- P(h);N_GUARD::S(K)
- S(b);N_GUARD::S(H)
- R(c);OGATE::P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B)
- R(g);P_PINS(H)::R1(G)
- R(g);::R1(G)
- B(a);N_GUARD::QAB(A),XB(a)
- S(b);N_GUARD::S(H),XS(b)
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).