MESON Chess Problem Database
Problem Display
PID: 64897 (8/6p1/2p5/2P1n1Bn/K2p1qP1/3B4/NppkP2R/1bR3Q1 w - - 0 1)
Westbury, Eric Ernest
3rd Prize, L'Eco degli Scacchi, 1917
#2
10 + 10
| 56 | The Problemist | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Qe1#
- 1...Bxa2
- 2.Rxc2#
- 1...Sg3
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qe3
- Tries
- 1.Bc4?
- threat
- 2.e4#
- 1...Sxc4
- 2.Qxd4#
- 1...Sxg4
- 2.Qxd4#
- 1...bxc1S
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sg3
- 2.Bxf4#
- 1...Bxa2!
- threat
- 1.Be4?
- 1...Qxg5
- 2.e3#
- 1...Bxa2
- 2.Rxc2#
- 1...Sxg4
- 2.Qxd4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Qxd4#
- 1...Sg6
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 1...Sf7
- 2.Qxd4#
- 1...Sg3
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 1...d3
- 2.exd3#
- 1...g6!
- 1...Qxg5
- 1.Bf5?
- 1...d3+
- 2.e4#
- 1...Qxg5
- 2.e3#
- 1...Bxa2
- 2.Rxc2#
- 1...Sxg4
- 2.Qxd4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Qxd4#
- 1...Sg6
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 1...Sf7
- 2.Qxd4#
- 1...Sg3
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 1...g6!
- 1...d3+
- 1.Ba6?
- threat
- 2.e4#
- 1...Sxg4
- 2.Qxd4#
- 1...bxc1S
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Qxd4#
- 1...Sg3
- 2.Bxf4#
- 1...Bxa2!
- threat
- 1.Bh7?
- 1...d3+
- 2.e4#
- 1...Qxg5
- 2.e3#
- 1...Bxa2
- 2.Rxc2#
- 1...Sxg4
- 2.Qxd4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Qxd4#
- 1...Sg6
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 1...Sf7
- 2.Qxd4#
- 1...Sg3
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 1...g6!
- 1...d3+
- 1.Bc4?
- Keys
- 1.Bg6!
- 1...d3+
- 2.e4#
- 1...Qxg5
- 2.e3#
- 1...Bxa2
- 2.Rxc2#
- 1...Sxg4
- 2.Qxd4#
- 1...Sxg6
- 2.Qxd4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qe3
- 2.Qe1#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 1...Sf7
- 2.Qxd4#
- 1...Sg3
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 1...d3+
- 1.Bg6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- Q(f);::QAB1(B)
- B(a);N_GUARD,XS(C)::R1(A),XP(c)
- S(h);N_GUARD::B(J),XQ(f)
- P(b);OGATE,XR(A)::QAB1(B),XQ(b)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- P(b);OGATE,XR(A)::QAB1(B),XB(b)
- P(b);OGATE,XR(A)::QAB1(B),XR(b)
- Tries
- Try
- B(F);
- Threat
- R(E)+P(D)
- Vars
- S(g);N_GUARD,XB(F)::QAR2(B),XP(e)
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(h);N_GUARD::B(J),XQ(f)
- Refutation
- B(a);XS(C)
- Try
- B(F);
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(J)::R(E)+P(D)
- B(a);N_GUARD,XS(C)::R1(A),XP(c)
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XQ(b)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- P(b);OGATE,XR(A)::QAB1(B),XB(b)
- P(b);OGATE,XR(A)::QAB1(B),XR(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(g);N_GUARD::QAR2(B),XP(e)
- S(h);N_GUARD::B(J),XQ(f)
- P(e);OGATE,P_PINB(F)::R(E)+P(D),XP(e)
- Refutation
- P(j);
- Try
- B(F);
- Vars
- P(e);CHECK,SBLOCK::R(E)+P(D)
- Q(f);N_GUARD,N_SPINQ(f),XB(J)::R(E)+P(D)
- B(a);N_GUARD,XS(C)::R1(A),XP(c)
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XQ(b)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- P(b);OGATE,XR(A)::QAB1(B),XB(b)
- P(b);OGATE,XR(A)::QAB1(B),XR(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(g);N_GUARD::QAR2(B),XP(e)
- S(h);N_GUARD::B(J),XQ(f)
- Refutation
- P(j);
- Try
- B(F);
- Threat
- R(E)+P(D)
- Vars
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(g);N_GUARD::QAR2(B),XP(e)
- S(h);N_GUARD::B(J),XQ(f)
- Refutation
- B(a);XS(C)
- Try
- B(F);
- Vars
- P(e);CHECK,SBLOCK::R(E)+P(D)
- Q(f);N_GUARD,N_SPINQ(f),XB(J)::R(E)+P(D)
- B(a);N_GUARD,XS(C)::R1(A),XP(c)
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XQ(b)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- P(b);OGATE,XR(A)::QAB1(B),XB(b)
- P(b);OGATE,XR(A)::QAB1(B),XR(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(g);N_GUARD::QAR2(B),XP(e)
- S(h);N_GUARD::B(J),XQ(f)
- Refutation
- P(j);
- Try
- Actual
- B(F);
- Vars
- P(e);CHECK,SBLOCK::R(E)+P(D)
- Q(f);N_GUARD,N_SPINQ(f),XB(J)::R(E)+P(D)
- B(a);N_GUARD,XS(C)::R1(A),XP(c)
- S(g);N_GUARD,XP(H)::QAR2(B),XP(e)
- S(g);N_GUARD,XB(F)::QAR2(B),XP(e)
- P(b);OGATE,XR(A)::QAB1(B),XQ(b)
- P(b);OGATE,XR(A)::QAB1(B),XS(b)
- P(b);OGATE,XR(A)::QAB1(B),XB(b)
- P(b);OGATE,XR(A)::QAB1(B),XR(b)
- Q(f);::QAB1(B)
- S(g);OGATE::R(E)+P(D),XS(g)
- S(g);N_GUARD::QAR2(B),XP(e)
- S(h);N_GUARD::B(J),XQ(f)
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).