MESON Chess Problem Database
Problem Display
PID: 30864 (3b4/2B1p1p1/4p1P1/3Pp2p/p2NN1Pk/Qb5P/3KB1P1/5Rn1 w - - 0 1)
Townsend, Alonzo
The Westminster Papers, 1874
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sf3+
- 2.Sxf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- Tries
- 1.Ke1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Bd1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd1
- 2.Qg3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...Se2
- 2.Sf3#
- 1...hxg4!
- 1...Sf3+
- 1.Bxd8?
- threat
- 2.Bxe7#
- 2.Qxe7#
- 1...Sf3+
- 2.Sxf3#
- 1...Sxh3
- 2.g3#
- 1...hxg4!
- threat
- 1.Ra1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Rb1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Rc1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Rd1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd1
- 2.Qg3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Re1?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Rxg1?
- threat
- 2.Sf3#
- 1...exd4
- 2.Bg3#
- 1...hxg4!
- threat
- 1.Rf2?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.Rf5?
- threat
- 2.Rxh5#
- 1...Sf3+
- 2.Sxf3#
- 1...exf5
- 2.Sxf5#
- 1...hxg4!
- threat
- 1.Rf7?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...hxg4!
- 1...Sf3+
- 1.g5?
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 2.Rf4#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...Bxc7!
- 1...Sf3+
- 1.dxe6?
- threat
- 2.Sf5#
- 1...Sf3+
- 2.Sxf3#
- 1...Bxe6
- 2.Qg3#
- 1...exd4
- 2.Bg3#
- 1...hxg4!
- threat
- 1.Ke1?
- Keys
- 1.Rf8!
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd5
- 2.Qg3#
- 1...Bxc7
- 2.Qxe7#
- 1...Sxe2
- 2.Sf3#
- 1...Sxh3
- 2.g3#
- 1...exd4
- 2.Bg3#
- 1...hxg4
- 2.Rh8#
- 1...exd5
- 2.Sf5#
- 1...Bd1
- 2.Qg3#
- 1...Ba2
- 2.Qg3#
- 1...Bc2
- 2.Qg3#
- 1...Bc4
- 2.Qg3#
- 1...Sf3+
- 1.Rf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);OGATE::QAB1(E)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);CHECK,N_GUARD::S(G),XS(a)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- B(C);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XB(C)::QAB1(E)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- S(a);N_GUARD::S(G)
- Refutation
- P(f);XP(I)
- Try
- B(L);P_PINP(h),XB(j)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- S(a);SBLOCK,XP(F)::P(D)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XR(A)::QAB1(E)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);XS(a)
- Threat
- S(G)
- Vars
- P(e);OGATE,XS(G)::B(L)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Threat
- R1(A),XP(f)
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- P(g);XR(A)::S(G),XP(g)
- Refutation
- P(f);XP(I)
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- P(f);XP(I)
- Try
- P(I);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
- Refutation
- B(j);XB(L)
- Try
- P(J);XP(g)
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- P(e);OGATE,XS(G)::B(L)
- Refutation
- P(f);XP(I)
- Try
- Actual
- R(A);
- Vars
- S(a);CHECK,N_GUARD::S(G),XS(a)
- B(b);OGATE,XP(J)::QAB1(E)
- B(j);N_GUARD,XB(L)::QAB(E),XP(h)
- S(a);N_GUARD,XB(C)::S(G)
- S(a);SBLOCK,XP(F)::P(D)
- P(e);OGATE,XS(G)::B(L)
- P(f);OGATEB,XP(I)::R(A)
- P(g);N_GUARD,XP(J)::S(G)
- B(b);OGATE::QAB1(E)
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).