MESON Chess Problem Database
Problem Display
PID: 58339 (7B/6n1/4PQb1/2KP1P1p/p3kN2/6pP/1nPP4/r2B1R2 w - - 0 1)
Francey, James
Chess Life, 1959
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxf5
- 2.Qd4#
- 1...Sd3+
- 2.cxd3#
- 1...Sxf5
- 2.Qe5#
- 1...Sxe6+
- 2.Qxe6#
- 1...Se8
- 2.Qe5#
- 1...Bxf5
- Tries
- 1.Se2?
- threat
- 2.Sc3#
- 2.Sxg3#
- 2.Rf4#
- 2.Qd4#
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxd1
- 2.Sxg3#
- 2.Rf4#
- 2.Qd4#
- 1...Sxf5
- 2.Sc3#
- 2.Rf4#
- 2.Qe5#
- 1...Ra3
- 2.Rf4#
- 2.Qd4#
- 1...g2
- 2.Sc3#
- 2.Sg3#
- 2.Rf4#
- 2.Qd4#
- 1...h4
- 2.Sc3#
- 2.Rf4#
- 2.Qd4#
- 1...Sd3+!
- threat
- 1.Sg2?
- threat
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 1...Sxe6+
- 2.Qxe6#
- 1...Rxd1
- 2.Rf4#
- 2.Qd4#
- 1...Sxd1
- 2.Rf4#
- 2.Qd4#
- 2.d3#
- 1...Sxf5
- 2.Bf3#
- 2.Rf4#
- 2.Qe5#
- 1...Ra3
- 2.Rf4#
- 2.Qd4#
- 1...Sc4
- 2.Bf3#
- 2.Rf4#
- 2.Qd4#
- 2.d3#
- 1...Sd3+!
- threat
- 1.Sd3?
- threat
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sxe6+
- 2.Qxe6#
- 1...Rxd1
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Bxf5
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 2.Qe5#
- 1...Sxd1
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sxf5
- 2.Bf3#
- 2.Rf4#
- 2.Qe5#
- 1...Sc4
- 2.Bf3#
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 1...h4
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 2.Qxh4#
- 2.Qe5#
- 1...Sxd3+!
- threat
- 1.Sxh5?
- threat
- 2.Sxg3#
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 1...Sxe6+
- 2.Qxe6#
- 1...Rxd1
- 2.Sxg3#
- 2.Rf4#
- 2.Qd4#
- 1...Bxh5
- 2.Qd4#
- 1...Sxd1
- 2.Sxg3#
- 2.Rf4#
- 2.Qd4#
- 1...Sxf5
- 2.Bf3#
- 2.Rf4#
- 2.Qe5#
- 1...Sxh5
- 2.Qd4#
- 2.Qe5#
- 1...Ra3
- 2.Rf4#
- 2.Qd4#
- 1...Sc4
- 2.Sxg3#
- 2.Bf3#
- 2.Rf4#
- 2.Qd4#
- 1...g2
- 2.Sg3#
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 1...Sd3+!
- threat
- 1.Sxg6?
- threat
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sxe6+
- 2.Qxe6#
- 1...Rxd1
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sxd1
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sxf5
- 2.Bf3#
- 2.Rf4#
- 2.Qe5#
- 2.Qxf5#
- 1...Ra3
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 2.Qe5#
- 1...Sc4
- 2.Bf3#
- 2.Rf4#
- 2.Qd4#
- 2.Qh4#
- 1...h4
- 2.Bf3#
- 2.Re1#
- 2.Rf4#
- 2.Qd4#
- 2.Qxh4#
- 2.Qe5#
- 1...Sd3+!
- threat
- 1.Bg4?
- threat
- 2.Qd4#
- 1...Sd3+
- 2.cxd3#
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxf5
- 2.Qe5#
- 1...hxg4!
- threat
- 1.Bxg7?
- threat
- 2.Qe5#
- 1...Sd3+
- 2.cxd3#
- 1...Sc4!
- threat
- 1.Se2?
- Keys
- 1.Qh4!
- threat
- 2.Sd3#
- 2.Sxg6#
- 1...Sd3+
- 2.Sxd3#
- 1...Sxe6+
- 2.Sxe6#
- 1...Ke5
- 2.Sxg6#
- 1...Kxf5
- 2.Sd3#
- 1...Bxf5
- 2.Re1#
- 1...Sxf5
- 2.Bf3#
- 1...Bf7
- 2.Sd3#
- 2.Sg6#
- 1...Bh7
- 2.Sd3#
- 2.Sg6#
- 1...Be8
- 2.Sd3#
- 2.Sg6#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(g);SBLOCK,XP(I)::QAR1(K)
- S(b);CHECK,OGATE::P(C),XS(b)
- S(h);XP(I)::QAR1(K)
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- S(h);::QAR1(K)
- Tries
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- Refutation
- S(b);CHECK
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- Refutation
- S(b);CHECK
- Try
- S(F);
- Threat
- DUALS(6)
- Vars
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- Refutation
- S(b);CHECK,XS(F)
- Try
- S(F);XP(f)
- Threat
- DUALS(5)
- Vars
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- B(g);XS(F)::QAR1(K)
- Refutation
- S(b);CHECK
- Try
- S(F);XB(g)
- Threat
- DUALS(6)
- Vars
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- Refutation
- S(b);CHECK
- Try
- B(A);
- Threat
- QAR1(K)
- Vars
- S(b);CHECK,OGATE::P(C),XS(b)
- S(h);CHECK,OGATE,XP(J)::QAR2(K),XS(h)
- S(h);XP(I)::QAR1(K)
- Refutation
- P(f);XB(A)
- Try
- B(L);XS(h)
- Threat
- QAR1(K)
- Vars
- S(b);CHECK,OGATE::P(C),XS(b)
- Refutation
- S(b);
- Try
- Actual
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK::QAR(K)+S(F),XS(b)
- S(h);CHECK,XP(J)::QAR(K)+S(F),XS(h)
- K(e);P-FLIGHT,P_SPINS(h)::S(F),XB(g)
- K(e);S_FLIGHT,XP(I)::R(B)+S(F)
- B(g);SBLOCK,XP(I)::R(B)
- S(h);SBLOCK,XP(I)::B(A)
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).