MESON Chess Problem Database
Problem Display
PID: 48742 (2N3Q1/1PKp2bN/2p2B1p/3R4/r3k3/q5nB/2PP1R2/8 w - - 0 1)
White, Alain Campbell
British Chess Magazine, 1901
#2
11 + 8
| 371 | The Chess Review | 1933 |
| 2207 | To Alain White | 1945 |
| 459 | Nebraska Chess Bulletin | 1951 |
| 56 | The Problemist | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sd6#
- 2.Bg2#
- 1...Qb2
- 2.Sd6#
- 2.Bg2#
- 1...Qb4
- 2.Bg2#
- 1...Qc5
- 2.Bg2#
- 1...Qd6+
- 2.Sxd6#
- 1...Qe7
- 2.Bg2#
- 1...Qf8
- 2.Bg2#
- 1...Qa1
- 2.Sd6#
- 2.Bg2#
- 1...Qa2
- 2.Sd6#
- 2.Bg2#
- 1...Qb3
- 2.Sd6#
- 1...Qc3
- 2.Sd6#
- 1...Qd3
- 2.Sd6#
- 2.cxd3#
- 1...Qe3
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 1...Ra5
- 2.Rd4#
- 1...Ra6
- 2.Rd4#
- 1...Ra7
- 2.Rd4#
- 1...Ra8
- 2.Rd4#
- 1...Bxf6
- 2.Sxf6#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Sh5
- 2.Bf5#
- 1...c5
- 2.Sd6#
- 1...h5
- 2.Sg5#
- 1...d6
- 2.Qe6#
- 1...Qc1
- Tries
- 1.Bc3?
- threat
- 2.Bg2#
- 1...Qd6+
- 2.Sxd6#
- 1...Be5+
- 2.Rxe5#
- 1...Qxc3
- 2.Sd6#
- 1...Qf8!
- threat
- 1.Rc5?
- threat
- 2.Sd6#
- 2.Qe8#
- 1...Qxc5
- 2.Bg2#
- 1...Bxf6
- 2.Qg4#
- 1...Qb2
- 2.Sd6#
- 2.Bg2#
- 1...Qa1
- 2.Sd6#
- 2.Bg2#
- 1...Qa2
- 2.Sd6#
- 2.Bg2#
- 1...Qb3
- 2.Sd6#
- 1...Qc3
- 2.Sd6#
- 1...Qd3
- 2.Qe8#
- 1...Rd4
- 2.Re5#
- 2.Qe8#
- 1...Bf8
- 2.Qg4#
- 1...Sf5
- 2.Bxf5#
- 1...d6
- 2.Sxd6#
- 2.Qe6#
- 2.Qe8#
- 1...Qf3!
- threat
- 1.Rh5?
- threat
- 2.Rh4#
- 1...Qd6+
- 2.Sxd6#
- 1...Bxf6
- 2.Qg4#
- 1...Sxh5
- 2.Bf5#
- 1...Qe3
- 2.Sd6#
- 2.Qe8#
- 1...Se2
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Qf3!
- threat
- 1.Qe8+?
- 1...Qe7
- 2.Bg2#
- 1...Kxd5!
- 1...Qe7
- 1.c3?
- threat
- 2.Bg2#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxc3
- 2.Sd6#
- 1...Rd4
- 2.Rxd4#
- 1...cxd5!
- threat
- 1.c4?
- threat
- 2.Rd4#
- 1...Qd6+
- 2.Sxd6#
- 1...Bxf6
- 2.Sxf6#
- 2.Qg4#
- 1...cxd5
- 2.Qxd5#
- 1...Qb2
- 2.Sd6#
- 2.Bg2#
- 1...Qc5
- 2.Bg2#
- 1...Qa1
- 2.Sd6#
- 2.Bg2#
- 1...Qc3
- 2.Sd6#
- 1...Qd3
- 2.Sd6#
- 2.Qe8#
- 1...Qe3
- 2.Sd6#
- 2.Qe8#
- 1...Se2
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...c5
- 2.Sd6#
- 2.Qe8#
- 1...Rxc4!
- threat
- 1.Bc3?
- Keys
- 1.Ra5!
- 1...Qd6+
- 2.Sxd6#
- 1...Rxa5
- 2.Qc4#
- 1...Bxf6
- 2.Qg4#
- 1...Qf3
- 2.Rxa4#
- 1...Qc1
- 2.Sd6#
- 2.Bg2#
- 2.Rxa4#
- 2.Qe8#
- 1...Qb2
- 2.Sd6#
- 2.Bg2#
- 1...Qb4
- 2.Bg2#
- 1...Qc5
- 2.Bg2#
- 1...Qe7
- 2.Bg2#
- 1...Qf8
- 2.Bg2#
- 1...Qa1
- 2.Sd6#
- 2.Bg2#
- 1...Qa2
- 2.Sd6#
- 2.Bg2#
- 1...Qb3
- 2.Sd6#
- 1...Qc3
- 2.Sd6#
- 1...Qd3
- 2.Qe8#
- 1...Qe3
- 2.Sd6#
- 2.Qe8#
- 1...Rb4
- 2.Sd6#
- 2.Qe8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Re5#
- 1...Bf8
- 2.Qg4#
- 1...Bh8
- 2.Qg4#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Sh5
- 2.Bf5#
- 1...c5
- 2.Sd6#
- 1...h5
- 2.Sg5#
- 1...d5
- 2.Qe6#
- 1...d6
- 2.Qe6#
- 2.Qe8#
- 1...Qd6+
- 1.Ra5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::B(D)
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- Q(a);N_GUARD::S(J)
- R(c);S_CUTQ(a)::S(J)
- R(c);N_GUARD::R1(E)
- R(c);N_GUARD,P_PINP(G)::R1(E)
- B(h);XB(F)::S(I),XB(h)
- S(b);N_GUARD::B(D)
- S(b);N_GUARD::B(D),XS(b)
- P(e);S_CUTQ(a)::S(J)
- P(f);N_GUARD::S(I)
- P(g);N_GUARD::QAR2(K)
- Tries
- Try
- B(F);
- Threat
- B(D)
- Vars
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- B(h);CHECK,N_GUARD::R1(E),XB(h)
- Q(a);N_GUARD,XB(F)::S(J)
- Refutation
- Q(a);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XR(E)::B(D)
- B(h);OGATE,XB(F)::QAR2(K)
- Q(a);::S(J)
- Q(a);::QAR(K)
- B(h);OGATE::QAR2(K)
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- Q(a);
- Try
- R(E);
- Threat
- R(E)
- Vars
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- B(h);OGATE,XB(F)::QAR2(K)
- S(b);N_GUARD,XR(E)::B(D)
- S(b);N_GUARD::B(D)
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- Q(a);
- Try
- Q(K);CHECK
- Vars
- Q(a);P_SPINQ(a)::B(D)
- Refutation
- K(d);S_FLIGHT,XR(E)
- Try
- P(A);
- Threat
- B(D)
- Vars
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- Q(a);N_GUARD,XP(A)::S(J)
- R(c);N_GUARD::R1(E),XR(c)
- Refutation
- P(e);XR(E)
- Try
- P(A);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- P(e);OGATE,XR(E)::QAB1(K),XP(e)
- Q(a);N_GUARD::B(D)
- Q(a);N_GUARD::S(J)
- S(b);N_GUARD::B(D)
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- R(c);XP(A)
- Try
- Actual
- R(E);
- Vars
- Q(a);CHECK,N_GUARD::S(J),XQ(a)
- R(c);N_GUARD,XR(E)::QAR2(K)
- B(h);OGATE,XB(F)::QAR2(K)
- Q(a);N_GUARD::R(E),XR(c)
- Q(a);N_GUARD::B(D)
- Q(a);N_GUARD::S(J)
- Q(a);N_GUARD::QAR(K)
- R(c);N_GUARD::QAR2(K),XR(c)
- R(c);SBLOCK::R1(E)
- B(h);OGATE::QAR2(K)
- S(b);N_GUARD::B(D)
- S(b);N_GUARD::B(D),XS(b)
- P(e);S_CUTQ(a)::S(J)
- P(f);N_GUARD::S(I)
- P(g);N_GUARD::QAR2(K)
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).