MESON Chess Problem Database
Problem Display
PID: 87943 (8/4pN2/2p2p1p/5R1n/2B1k1P1/4p1p1/2r1N1K1/nQ6 w - - 0 1)
Caine, Walter Edmund
The Problemist, 1951
#2
7 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...Sb3
- Tries
- 1.Kf1?
- 1...Sf4
- 2.Rxf4#
- 1...Sb3
- 2.Qxc2#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...g2+!
- 1...Sf4
- 1.Kg1?
- 1...Sf4
- 2.Rxf4#
- 1...Sb3
- 2.Qxc2#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...g2!
- 1...Sf4
- 1.Kh1?
- 1...Sf4
- 2.Rxf4#
- 1...Sb3
- 2.Qxc2#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...g2+!
- 1...Sf4
- 1.Kh3?
- 1...Sf4+
- 2.Rxf4#
- 1...Sb3
- 2.Qxc2#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...g2!
- 1...Sf4+
- 1.Rxh5?
- 1...Sb3
- 2.Qxc2#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...f5!
- 1...Sb3
- 1.gxh5?
- threat
- 2.Rf4#
- 1...e5
- 2.Sd6#
- 1...Kxf5!
- threat
- 1.Kf1?
- Keys
- 1.Qb4!
- threat
- 2.Qxe7#
- 1...Rxe2+
- 2.Bxe2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc4
- 2.Qxc4#
- 1...Sg7
- 2.Rf4#
- 1...c5
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::QAB(A),XR(b)
- S(f);CHECK,N_GUARD::R1(F),XS(f)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Tries
- Try
- K(C);N_SPINS(B),S_FLIGHT
- Vars
- S(f);N_GUARD::R1(F),XS(f)
- S(a);N_GUARD::QAB(A),XR(b)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Refutation
- P(d);CHECK
- Try
- K(C);N_SPINS(B),P-FLIGHT
- Vars
- S(f);N_GUARD::R1(F),XS(f)
- S(a);N_GUARD::QAB(A),XR(b)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Refutation
- P(d);
- Try
- K(C);N_SPINS(B),S_FLIGHT
- Vars
- S(f);N_GUARD::R1(F),XS(f)
- S(a);N_GUARD::QAB(A),XR(b)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Refutation
- P(d);CHECK
- Try
- K(C);N_SPINS(B),S_FLIGHT
- Vars
- S(f);CHECK,N_GUARD::R1(F),XS(f)
- S(a);N_GUARD::QAB(A),XR(b)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Refutation
- P(d);
- Try
- R(F);XS(f)
- Vars
- S(a);N_GUARD::QAB(A),XR(b)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
- Refutation
- P(h);
- Try
- P(E);XS(f)
- Threat
- R1(F)
- Vars
- P(j);N_GUARD::S(G)
- Refutation
- K(e);S_FLIGHT,XR(F)
- Try
- Actual
- Q(A);N_PINR(b)
- Threat
- QAR(A),XP(j)
- Vars
- R(b);CHECK,OGATE,XS(B)::QAR(A)+B(D),XR(b)
- S(f);CHECK,N_GUARD::R1(F),XS(f)
- R(b);N_PINS(B),OGATE,P_SPINR(b),XB(D)::QAR2(A),XR(b)
- S(f);N_GUARD::R1(F)
- P(g);OGATEB::QAB(A)
- P(j);N_GUARD::S(G)
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).