MESON Chess Problem Database
Problem Display
PID: 479 (B1N5/2r1p3/1pr5/1P2RP2/3k1Np1/1Kp5/1P2Qb1n/7b w - - 0 1)
Swords, WJ
The Observer, 1956
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Se6#
- 1...Rc5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Be4
- 2.Qxe4#
- 1...Bd5+
- 2.Rxd5#
- 1...Be1
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 1...Bg3
- 2.Qe3#
- 1...Bh4
- 2.Qe3#
- 1...Sf3
- 2.Rd5#
- 2.Qe4#
- 1...Rc4
- Tries
- 1.Sg2?
- threat
- 2.Qe4#
- 1...Be3
- 2.Qxe3#
- 1...Bxg2!
- threat
- 1.Sd6?
- threat
- 2.Se6#
- 1...Bd5+
- 2.Rxd5#
- 1...Be4
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...e6
- 2.Sxe6#
- 1...Rxd6!
- threat
- 1.Bxc6?
- threat
- 2.Se6#
- 2.bxc3#
- 1...Bd5+
- 2.Rxd5#
- 1...cxb2
- 2.Se6#
- 2.Qxb2#
- 1...Be4
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...Be1
- 2.Se6#
- 2.Qe3#
- 1...c2
- 2.Se6#
- 1...e6
- 2.Sxe6#
- 2.bxc3#
- 1...Rxc6!
- threat
- 1.Re4+?
- 1...Kc5
- 2.Qc4#
- 1...Bxe4!
- 1...Kc5
- 1.Re6?
- threat
- 2.Qxf2#
- 2.Qe5#
- 1...Kc5
- 2.Qc4#
- 1...Rxe6
- 2.Sxe6#
- 1...Rc5
- 2.Qd1#
- 2.Qd3#
- 2.Qxf2#
- 1...Be4
- 2.Qxf2#
- 1...Be1
- 2.Qe3#
- 2.Qe5#
- 1...Bg1
- 2.Qe5#
- 1...Be3
- 2.Qxe3#
- 1...Bg3
- 2.Qe3#
- 2.Qe5#
- 1...Bh4
- 2.Qe3#
- 2.Qe5#
- 1...Sf1
- 2.Qe5#
- 1...Sf3
- 2.Qxf2#
- 1...g3
- 2.Qe5#
- 1...Bd5+!
- threat
- 1.bxc6?
- threat
- 2.Se6#
- 2.bxc3#
- 1...Bd5+
- 2.Rxd5#
- 1...cxb2
- 2.Se6#
- 2.Qxb2#
- 1...Be4
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...Be1
- 2.Se6#
- 2.Qe3#
- 1...c2
- 2.Se6#
- 1...e6
- 2.Sxe6#
- 2.bxc3#
- 1...Rxc6!
- threat
- 1.Sg2?
- Keys
- 1.Rc5!
- threat
- 2.Qe5#
- 1...Bd5+
- 2.Rxd5#
- 1...Kxc5
- 2.Qc4#
- 1...Rxc5
- 2.Se6#
- 1...bxc5
- 2.bxc3#
- 1...Be3
- 2.Qc4#
- 1...Re6
- 2.Sxe6#
- 1...Be4
- 2.Qxf2#
- 1...Sf3
- 2.Rd5#
- 1...e5
- 2.Qxe5#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(h);N_GUARD::S(D)
- R(h);N_GUARD::S(D),XR(h)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(b);N_GUARD::QAB1(B)
- B(b);N_GUARD::QAB1(B),XB(b)
- Tries
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- B(b);N_GUARD::QAB1(B),XB(b)
- Refutation
- B(a);XS(D)
- Try
- S(I);
- Threat
- S(D)
- Vars
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(b);N_GUARD::QAB1(B),XB(b)
- P(j);::S(D),XP(j)
- Refutation
- R(h);XS(I)
- Try
- B(H);XR(h)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(b);N_GUARD::QAB1(B),XB(b)
- P(d);::S(D)
- Refutation
- R(i);XB(H)
- Try
- R(F);CHECK
- Vars
- K(e);S_FLIGHT::QAR1(B)
- Refutation
- B(a);XR(F)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- K(e);S_FLIGHT::QAR1(B)
- R(h);XR(F)::S(D),XR(h)
- B(a);::QAB(B),XB(b)
- B(b);::QAB1(B)
- B(b);N_GUARD::QAB1(B),XB(b)
- S(c);::QAB1(B)
- S(c);::QAB(B),XB(b)
- P(f);::QAB1(B)
- Refutation
- B(a);CHECK
- Try
- P(E);XR(h)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(b);N_GUARD::QAB1(B),XB(b)
- P(d);::S(D)
- Refutation
- R(i);XP(E)
- Try
- Actual
- R(F);
- Threat
- QAB1(B)
- Vars
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- K(e);S_FLIGHT,XR(F)::QAR1(B)
- R(h);N_GUARD,XR(F)::S(D)
- P(g);SBLOCK,XR(F)::P(A),XP(d)
- B(b);SBLOCK::QAR1(B)
- R(h);N_GUARD::S(D),XR(h)
- B(a);SBLOCK::QAB(B),XB(b)
- S(c);S_CUTB(a)::R1(F)
- P(j);::QAB1(B),XP(j)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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