MESON Chess Problem Database
Problem Display
PID: 258382 (2N1Bb2/8/r1PP2R1/2Bk1pp1/2pPp1p1/P4rP1/5Q2/1NK5 w - - 0 1)
Williams, Philip Hamilton
English Mechanic and World of Science, 1892
(First published on Fri Feb 12 1892)
#2
12 + 9
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxf2
- 2.Sc3#
- 1...Rfxa3
- 2.Qxf5#
- 1...Rb3
- 2.Qxf5#
- 1...Rc3+
- 2.Sxc3#
- 1...Rd3
- 2.Qxf5#
- 1...Re3
- 2.Qxf5#
- 1...Rxg3
- 2.Qxf5#
- 1...Rf4
- 2.Sc3#
- 1...Raxa3
- 2.Sb6#
- 1...Ra4
- 2.Sb6#
- 1...Ra5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Rxc6
- 2.Bf7#
- 1...Ra7
- 2.Sb6#
- 1...Ra8
- 2.Sb6#
- 1...Bxd6
- 2.Rxd6#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Sc3#
- 1...Rxf2
- Tries
- 1.Sa7?
- threat
- 2.Bf7#
- 1...Rc3+
- 2.Sxc3#
- 1...e3
- 2.Sc3#
- 1...Rxa7!
- threat
- 1.Ba7?
- 1...Rc3+
- 2.Sxc3#
- 1...Rxf2
- 2.Sc3#
- 1...Rfxa3
- 2.Qxf5#
- 1...Rxg3
- 2.Qxf5#
- 1...Raxa3
- 2.Sb6#
- 1...Rxc6
- 2.Bf7#
- 1...Rxa7
- 2.Sb6#
- 1...Bxd6
- 2.Rxd6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Sc3#
- 1...Rb3
- 2.Qxf5#
- 1...Rd3
- 2.Qxf5#
- 1...Re3
- 2.Qxf5#
- 1...Rf4
- 2.Sc3#
- 1...Ra4
- 2.Sb6#
- 1...Ra5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...f4!
- 1...Rc3+
- 1.Rf6?
- 1...Rc3+
- 2.Sxc3#
- 1...Rxf2
- 2.Sc3#
- 1...Rfxa3
- 2.Qxf5#
- 1...Rxg3
- 2.Qxf5#
- 1...Raxa3
- 2.Sb6#
- 1...Rxc6
- 2.Bf7#
- 1...Bxd6
- 2.Rxd6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Sc3#
- 1...Rb3
- 2.Qxf5#
- 1...Rd3
- 2.Qxf5#
- 1...Re3
- 2.Qxf5#
- 1...Rf4
- 2.Sc3#
- 1...Ra4
- 2.Sb6#
- 1...Ra5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Ra7
- 2.Sb6#
- 1...Ra8
- 2.Sb6#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...f4!
- 1...Rc3+
- 1.Qxf3?
- threat
- 2.Sc3#
- 2.Qxf5#
- 1...Rxa3
- 2.Sb6#
- 2.Qxf5#
- 1...Bxd6
- 2.Sc3#
- 2.Rxd6#
- 1...exf3
- 2.Sc3#
- 1...gxf3
- 2.Sc3#
- 1...f4
- 2.Sc3#
- 1...Bg7
- 2.Sc3#
- 2.Se7#
- 1...c3!
- threat
- 1.a4?
- 1...Rc3+
- 2.Sxc3#
- 1...Rxf2
- 2.Sc3#
- 1...Rxg3
- 2.Qxf5#
- 1...Rxa4
- 2.Sb6#
- 1...Rxc6
- 2.Bf7#
- 1...Bxd6
- 2.Rxd6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Sc3#
- 1...Ra3
- 2.Qxf5#
- 1...Rb3
- 2.Qxf5#
- 1...Rd3
- 2.Qxf5#
- 1...Re3
- 2.Qxf5#
- 1...Rf4
- 2.Sc3#
- 1...Ra5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Ra7
- 2.Sb6#
- 1...Ra8
- 2.Sb6#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...f4!
- 1...Rc3+
- 1.d7?
- threat
- 2.Bf7#
- 1...Rc3+
- 2.Sxc3#
- 1...Bd6
- 2.Rxd6#
- 1...e3
- 2.Sc3#
- 1...Rxc6!
- threat
- 1.Sa7?
- Keys
- 1.Bd7!
- 1...Rc3+
- 2.Sxc3#
- 1...Rxf2
- 2.Sc3#
- 1...Rfxa3
- 2.Qxf5#
- 1...Rxg3
- 2.Qxf5#
- 1...Raxa3
- 2.Sb6#
- 1...Rxc6
- 2.Be6#
- 1...Bxd6
- 2.Rxd6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Sc3#
- 1...f4
- 2.Rxg5#
- 1...Rb3
- 2.Qxf5#
- 1...Rd3
- 2.Qxf5#
- 1...Re3
- 2.Qxf5#
- 1...Rf4
- 2.Sc3#
- 1...Ra4
- 2.Sb6#
- 1...Ra5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Ra7
- 2.Sb6#
- 1...Ra8
- 2.Sb6#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...Rc3+
- 1.Bd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,XQ(C)::S(A)
- R(a);OGATE,XP(D)::QAR2(C),XP(f)
- R(a);OGATE::QAR2(C),XP(f)
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);OGATE,XP(E)::QAR2(C),XP(f)
- R(a);N_GUARD::S(A)
- R(h);N_GUARD,XP(D)::S(K)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- R(h);SBLOCK,XP(H)::B(L)
- B(i);OGATE,XP(I)::R1(J),XB(i)
- B(i);N_GUARD::S(K)
- B(i);N_GUARD::S(K),XB(i)
- P(b);OGATEB::QAB(C)
- P(c);S_CUTR(a)::S(A)
- Tries
- Try
- S(K);
- Threat
- B(L)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- P(c);S_CUTR(a)::S(A)
- Refutation
- R(h);XS(K)
- Try
- B(G);
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);N_GUARD,XQ(C)::S(A)
- R(a);OGATE,XP(D)::QAR2(C),XP(f)
- R(a);OGATE,XP(E)::QAR2(C),XP(f)
- R(h);N_GUARD,XP(D)::S(K)
- R(h);SBLOCK,XP(H)::B(L)
- R(h);N_GUARD,XB(G)::S(K)
- B(i);OGATE,XP(I)::R1(J),XB(i)
- P(b);OGATEB::QAB(C)
- P(c);S_CUTR(a)::S(A)
- R(a);OGATE::QAR2(C),XP(f)
- R(a);N_GUARD::S(A)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- B(i);N_GUARD::S(K)
- B(i);N_GUARD::S(K),XB(i)
- Refutation
- P(f);
- Try
- R(J);
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);N_GUARD,XQ(C)::S(A)
- R(a);OGATE,XP(D)::QAR2(C),XP(f)
- R(a);OGATE,XP(E)::QAR2(C),XP(f)
- R(h);N_GUARD,XP(D)::S(K)
- R(h);SBLOCK,XP(H)::B(L)
- B(i);OGATE,XP(I)::R1(J),XB(i)
- P(b);OGATEB::QAB(C)
- P(c);S_CUTR(a)::S(A)
- R(a);OGATE::QAR2(C),XP(f)
- R(a);N_GUARD::S(A)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- B(i);N_GUARD::S(K)
- B(i);N_GUARD::S(K),XB(i)
- Refutation
- P(f);
- Try
- Q(C);P_PINP(c),XR(a)
- Threat
- DUALS(2)
- Vars
- P(c);N_SPINP(c),XQ(C)::S(A)
- P(d);N_SPINP(c),XQ(C)::S(A)
- P(f);::S(A)
- Refutation
- P(b);
- Try
- P(D);
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);N_GUARD,XQ(C)::S(A)
- R(a);OGATE,XP(E)::QAR2(C),XP(f)
- R(h);N_GUARD,XP(D)::S(K)
- R(h);SBLOCK,XP(H)::B(L)
- B(i);OGATE,XP(I)::R1(J),XB(i)
- P(b);OGATEB::QAB(C)
- P(c);S_CUTR(a)::S(A)
- R(a);OGATE::QAR2(C),XP(f)
- R(a);N_GUARD::S(A)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- B(i);N_GUARD::S(K)
- B(i);N_GUARD::S(K),XB(i)
- Refutation
- P(f);
- Try
- P(I);
- Threat
- B(L)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R1(J),XB(i)
- P(c);S_CUTR(a)::S(A)
- Refutation
- R(h);XP(H)
- Try
- Actual
- B(L);
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);N_GUARD,XQ(C)::S(A)
- R(a);OGATE,XP(D)::QAR2(C),XP(f)
- R(a);OGATE,XP(E)::QAR2(C),XP(f)
- R(h);N_GUARD,XP(D)::S(K)
- R(h);SBLOCK,XP(H)::B(L)
- B(i);OGATE,XP(I)::R1(J),XB(i)
- P(b);OGATEB::QAB(C)
- P(c);S_CUTR(a)::S(A)
- P(f);OGATEB::R(J),XP(g)
- R(a);OGATE::QAR2(C),XP(f)
- R(a);N_GUARD::S(A)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- B(i);N_GUARD::S(K)
- B(i);N_GUARD::S(K),XB(i)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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