MESON Chess Problem Database
Problem Display
PID: 228079 (3B1n2/5QRn/3p1p2/5k2/2N4P/3rp1P1/3PP1B1/3N1K2 w - - 0 1)
Conway-Poole, IM
Sunday Chronicle, 1947
(First published on Sun Jul 6 1947)
#2
11 + 7
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Sdxe3#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Sg5
- 2.Rxg5#
- 1...Se6
- 2.Qg6#
- 1...Sg6
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...exd2
- 2.e4#
- 1...Rxd2
- Tries
- 1.Kg1?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Sf2?
- threat
- 2.Bh3#
- 2.Be4#
- 1...exf2
- 2.e4#
- 1...d5
- 2.Bh3#
- 1...Sg5
- 2.Rxg5#
- 2.Qxf6#
- 1...Rd4!
- threat
- 1.Sc3?
- threat
- 2.Bh3#
- 2.Be4#
- 1...Rxc3
- 2.Qd5#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Bh3#
- 2.Qd7#
- 1...d5
- 2.Bh3#
- 1...Rd4!
- threat
- 1.Bh1?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Bf3?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Sg5
- 2.Rxg5#
- 2.Qxf6#
- 1...Se6
- 2.Qg6#
- 1...Sg6
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Bc6?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Rd5
- 2.Qxd5#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Bb7?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Rd5
- 2.Qxd5#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Ba8?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Rd5
- 2.Qxd5#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Ba5?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Bb6?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Rg4?
- threat
- 2.Rf4#
- 1...Rd4
- 2.Sdxe3#
- 1...Se6
- 2.Qg6#
- 1...Sg6
- 2.Qd7#
- 1...Kxg4!
- threat
- 1.Rg8?
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 2.Qxh7#
- 1...Sd7
- 2.Qxd7#
- 1...d5!
- 1...Rxd2
- 1.Qh5+?
- 1...Ke6
- 2.Re7#
- 1...Sg5!
- 1...Ke6
- 1.Qg6+?
- 1...Ke6
- 2.Re7#
- 2.Qe4#
- 1...Sxg6!
- 1...Ke6
- 1.Qe8?
- threat
- 2.Bh3#
- 2.Be4#
- 2.Qe4#
- 1...Sg6
- 2.Bh3#
- 2.Qd7#
- 2.Qe4#
- 1...d5
- 2.Sd6#
- 2.Bh3#
- 1...Rd4
- 2.Sdxe3#
- 2.Scxe3#
- 1...Se6
- 2.Qg6#
- 1...Sg5!
- threat
- 1.exd3?
- threat
- 2.Sdxe3#
- 2.Bh3#
- 2.Be4#
- 2.Qd5#
- 1...exd2
- 2.Sde3#
- 2.Bh3#
- 2.Be4#
- 2.Qd5#
- 1...Sg5
- 2.Sdxe3#
- 2.Rxg5#
- 1...Sg6
- 2.Sdxe3#
- 2.Bh3#
- 2.Qd7#
- 1...d5
- 2.Sdxe3#
- 2.Bh3#
- 2.Qxd5#
- 1...Se6
- 2.Sdxe3#
- 2.Bh3#
- 2.Be4#
- 2.Qg6#
- 1...Sd7
- 2.Sdxe3#
- 2.Bh3#
- 2.Be4#
- 2.Qxd7#
- 1...e2+!
- threat
- 1.Kg1?
- Keys
- 1.Bc7!
- 1...Rxd2
- 2.Sdxe3#
- 1...exd2
- 2.e4#
- 1...Sg5
- 2.Rxg5#
- 1...Sg6
- 2.Qd7#
- 1...d5
- 2.g4#
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd4
- 2.Sdxe3#
- 1...Rd5
- 2.Sdxe3#
- 2.Qxd5#
- 1...Se6
- 2.Qg6#
- 1...Sd7
- 2.Qxd7#
- 1...Rxd2
- 1.Bc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I)
- S(g);N_GUARD::QAB(I),XS(g)
- P(b);OGATE,XP(C)::P(D)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- P(b);OGATE,XS(A)::P(D)
- P(d);::B(E)
- Refutation
- R(a);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XS(A)::QAR2(I)
- S(f);N_GUARD::R1(J),XS(f)
- P(d);::B(E)
- Refutation
- R(a);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- R(a);N_GUARD::QAR2(I),XR(a)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- R(a);N_GUARD::QAR2(I),XR(a)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- R(a);N_GUARD::QAR2(I),XR(a)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(K);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- B(K);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- R(J);
- Threat
- R1(J)
- Vars
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I)
- Refutation
- K(c);N_SPINP(e),S_FLIGHT,XR(J)
- Try
- R(J);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(d);
- Try
- Q(I);CHECK,N_PINP(e)
- Vars
- K(c);S_FLIGHT::R1(J)
- Refutation
- S(f);P_SPINS(f)
- Try
- Q(I);CHECK,N_PINP(e)
- Refutation
- S(g);XQ(I)
- Try
- Q(I);N_PINP(e)
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD,SBLOCK::QAB1(I)
- Refutation
- S(f);
- Try
- P(D);XR(a)
- Threat
- DUALS(4)
- Refutation
- P(b);CHECK
- Try
- Actual
- B(K);
- Vars
- R(a);N_GUARD,XP(C)::S(A),XP(b)
- P(b);OGATE,XP(C)::P(D)
- S(f);N_GUARD::R1(J),XS(f)
- S(g);N_GUARD::QAB(I)
- P(d);::P(F)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD,SBLOCK::QAB1(I)
- S(g);N_GUARD::QAB(I),XS(g)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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