MESON Chess Problem Database
Problem Display
PID: 8177 (2n1B3/2pp1NQ1/PBk1Pn2/1p1N3R/4p1p1/1P1P1b2/qPKP2r1/2R5 w - - 0 1)
Morse, Christopher Jeremy
The Problemist, 1995
#2
14 + 11
SOLUTION
- SOUND
- Sets
- 1...Qb1+
- 2.Kxb1#
- 1...Qxb3+
- 2.Kxb3#
- 1...Qxb2+
- 2.Kxb2#
- 1...Rxd2+
- 2.Kxd2#
- 1...Re2
- 2.Kd1#
- 1...Bd1+
- 2.Kxd1#
- 1...Sh7
- 2.Bxd7#
- 2.Qc3#
- 1...Sxe8
- 2.Qc3#
- 1...Sg8
- 2.Bxd7#
- 2.Qc3#
- 1...Sxb6
- 2.Sb4#
- 2.Se7#
- 1...Sd6
- 2.Sd8#
- 1...exd3+
- 2.Kxd3#
- 1...Qb1+
- Tries
- 1.Qxf6?
- threat
- 2.Bxd7#
- 2.Qc3#
- 1...Qb1+
- 2.Kxb1#
- 1...Qxb3+
- 2.Kxb3#
- 1...Qxb2+
- 2.Kxb2#
- 1...Rxd2+
- 2.Kxd2#
- 1...Bd1+
- 2.Kxd1#
- 1...exd3+
- 2.Kxd3#
- 1...Sxb6
- 2.Sb4#
- 2.Se7#
- 1...cxb6
- 2.Qc3#
- 1...b4
- 2.Bxd7#
- 1...Qa3
- 2.Bxd7#
- 1...Qa4
- 2.Bxd7#
- 1...Qa5
- 2.Bxd7#
- 1...Sd6
- 2.Sd8#
- 2.Bxd7#
- 1...Qxa6!
- threat
- 1.Qf8?
- threat
- 2.Sd8#
- 2.Qc5#
- 1...Qb1+
- 2.Kxb1#
- 1...Qxb3+
- 2.Kxb3#
- 1...Qxb2+
- 2.Kxb2#
- 1...Rxd2+
- 2.Kxd2#
- 1...Bd1+
- 2.Kxd1#
- 1...exd3+
- 2.Kxd3#
- 1...Qxa6
- 2.Sd8#
- 1...Sxd5
- 2.Qc5#
- 1...Sxh5
- 2.Qc5#
- 1...Sxb6
- 2.Sb4#
- 2.Se7#
- 2.Sd8#
- 1...cxb6
- 2.Sd8#
- 1...b4
- 2.Qc5#
- 1...Qa3
- 2.Sd8#
- 1...Sd6
- 2.Sd8#
- 1...Se7!
- threat
- 1.Qxf6?
- Keys
- 1.exd7!
- threat
- 2.d8S#
- 1...Qb1+
- 2.Kxb1#
- 1...Qxb3+
- 2.Kxb3#
- 1...Qxb2+
- 2.Kxb2#
- 1...Rxd2+
- 2.Kxd2#
- 1...Bd1+
- 2.Kxd1#
- 1...exd3+
- 2.Kxd3#
- 1...Sxd5
- 2.dxc8S#
- 1...Sxh5
- 2.d8Q#
- 2.d8R#
- 1...Sxd7
- 2.Qc3#
- 1...Sxe8
- 2.dxe8Q#
- 2.dxe8B#
- 1...Sxb6
- 2.Sb4#
- 2.Se7#
- 1...cxb6
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sh7
- 2.Qc3#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Sg8
- 2.Qc3#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- threat
- 1.exd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(a);CHECK,N_PINP(B),P_PINP(D)::R(A)+K(C),XQ(a)
- Q(a);CHECK,N_PINP(B),P_PINP(D),XP(E)::R(A)+K(C),XQ(a)
- Q(a);CHECK,P_PINP(D),XP(B)::R(A)+K(C),XQ(a)
- R(b);CHECK,XP(D)::R(A)+K(C),XR(b)
- R(b);::R(A)+K(C)
- B(c);CHECK::R(A)+K(C),XB(c)
- S(h);N_SPINP(j),OGATE,XB(N)::QAR(M)
- S(k);SBLOCK::S(L)
- P(d);CHECK,XP(F)::R(A)+K(C),XP(d)
- Tries
- Try
- Q(M);XS(h)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_PINP(B),P_PINP(D)::R(A)+K(C),XQ(a)
- Q(a);CHECK,N_PINP(B),P_PINP(D),XP(E)::R(A)+K(C),XQ(a)
- Q(a);CHECK,P_PINP(D),XP(B)::R(A)+K(C),XQ(a)
- R(b);CHECK,XP(D)::R(A)+K(C),XR(b)
- B(c);CHECK::R(A)+K(C),XB(c)
- P(d);CHECK,XP(F)::R(A)+K(C),XP(d)
- P(i);XB(J)::QAR(M)
- P(f);::B(N),XP(j)
- Q(a);N_PINP(B),P_PINP(D)::B(N),XP(j)
- Refutation
- Q(a);N_PINP(B),P_PINP(D),XP(I)
- Try
- Q(M);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_PINP(B),P_PINP(D)::R(A)+K(C),XQ(a)
- Q(a);CHECK,N_PINP(B),P_PINP(D),XP(E)::R(A)+K(C),XQ(a)
- Q(a);CHECK,P_PINP(D),XP(B)::R(A)+K(C),XQ(a)
- R(b);CHECK,XP(D)::R(A)+K(C),XR(b)
- B(c);CHECK::R(A)+K(C),XB(c)
- P(d);CHECK,XP(F)::R(A)+K(C),XP(d)
- Q(a);N_PINP(B),P_PINP(D),XP(I)::S(L)
- S(h);XS(G)::QAR1(M)
- S(h);XR(H)::QAR1(M)
- P(i);XB(J)::S(L)
- P(f);::QAR1(M)
- Q(a);N_PINP(B),P_PINP(D)::S(L)
- S(k);::S(L)
- Refutation
- S(k);
- Try
- Actual
- P(K);XP(j)
- Threat
- P=S
- Vars
- Q(a);CHECK,N_PINP(B),P_PINP(D)::R(A)+K(C),XQ(a)
- Q(a);CHECK,N_PINP(B),P_PINP(D),XP(E)::R(A)+K(C),XQ(a)
- Q(a);CHECK,P_PINP(D),XP(B)::R(A)+K(C),XQ(a)
- R(b);CHECK,XP(D)::R(A)+K(C),XR(b)
- B(c);CHECK::R(A)+K(C),XB(c)
- P(d);CHECK,XP(F)::R(A)+K(C),XP(d)
- S(h);N_GUARD,XS(G)::PXS(k)=S
- S(h);N_GUARD,XR(H)::P=Q
- S(h);OGATE,P_SPINS(h),XP(K)::QAR(M)
- S(h);OGATE,XB(N)::PXS(h)=Q
- P(i);XB(J)::PXS(k)=Q
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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