MESON Chess Problem Database
Problem Display
PID: 76869 (b3N1B1/r1Q3K1/4r1np/1PBkn1bR/4p1p1/2R1P3/2P1N3/q7 w - - 0 1)
Gamage, Frederick
Frederick Gamage (Prcic), 2004
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qd6#
- 1...Ra3
- 2.Qd6#
- 1...Ra4
- 2.Qd6#
- 1...Ra5
- 2.Qd6#
- 1...Rxc7+
- 2.Sxc7#
- 1...Bxe3
- 2.Sf6#
- 1...Bf4
- 2.Sf6#
- 1...Bf6+
- 2.Sxf6#
- 1...Bb7
- 2.Qd6#
- 1...Sd3
- 2.Sf6#
- 1...Sf3
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sc6
- 2.Sf6#
- 1...Sd7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...Ra2
- Tries
- 1.Sf4+?
- 1...Bxf4
- 2.Sf6#
- 1...Sxf4!
- 1...Bxf4
- 1.Ba3?
- threat
- 2.Rc5#
- 1...Rxc7+
- 2.Sxc7#
- 1...Bf6+
- 2.Sxf6#
- 1...Qxc3
- 2.Sxc3#
- 1...Bxe3
- 2.Sf6#
- 1...Be7
- 2.Qc4#
- 1...Sd3
- 2.Sf6#
- 1...Sf3
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sc6
- 2.Sf6#
- 1...Sd7
- 2.Qd6#
- 1...Sf7
- 2.Qc5#
- 1...Qxa3!
- threat
- 1.Be7?
- threat
- 2.Rc5#
- 2.Qd6#
- 2.Qc5#
- 1...Bf6+
- 2.Sxf6#
- 1...Qxc3
- 2.Sxc3#
- 1...Rxc7
- 2.Sxc7#
- 1...Bxe3
- 2.Sf6#
- 2.Qd6#
- 2.Qc4#
- 1...Bxe7
- 2.Qc4#
- 1...Qa6
- 2.Rc5#
- 2.Qc5#
- 1...Ra6
- 2.Rc5#
- 2.Qc5#
- 1...Bc6
- 2.Rc5#
- 2.Qd6#
- 1...Sd3
- 2.Sf6#
- 2.Qd6#
- 1...Sf3
- 2.Sf6#
- 2.Qd6#
- 2.Qc5#
- 1...Sc4
- 2.Sf6#
- 2.Qc5#
- 1...Sc6
- 2.Sf6#
- 2.Qd6#
- 1...Sd7
- 2.Qd6#
- 1...Sf7
- 2.Qc5#
- 1...Qa3!
- threat
- 1.Bf8?
- threat
- 2.Rc5#
- 1...Rxc7+
- 2.Sxc7#
- 1...Bf6+
- 2.Sxf6#
- 1...Qxc3
- 2.Sxc3#
- 1...Bxe3
- 2.Sf6#
- 1...Be7
- 2.Qc4#
- 1...Sd3
- 2.Sf6#
- 1...Sf3
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sc6
- 2.Sf6#
- 1...Sd7
- 2.Qd6#
- 1...Sf7
- 2.Qc5#
- 1...Qa3!
- threat
- 1.Sf4+?
- Keys
- 1.Bb4!
- threat
- 2.Rc5#
- 1...Rxc7+
- 2.Sxc7#
- 1...Bf6+
- 2.Sxf6#
- 1...Qxc3
- 2.Sxc3#
- 1...Bxe3
- 2.Sf6#
- 1...Be7
- 2.Qc4#
- 1...Sd3
- 2.Sf6#
- 1...Sf3
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sc6
- 2.Sf6#
- 1...Sd7
- 2.Qd6#
- 1...Sf7
- 2.Qc5#
- threat
- 1.Bb4!
This is after
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- R(j);N_PINQ(H)::QAR1(H)
- R(j);CHECK,XQ(H)::S(J),XR(j)
- B(f);N_GUARD,P_SPINS(e),XP(D)::S(J)
- B(f);N_GUARD,P_SPINS(e)::S(J)
- B(f);CHECK,N_GUARD,P_SPINS(e)::S(J),XB(f)
- B(k);N_PINQ(H)::QAR1(H)
- S(e);P_PINR(C),P_SPINB(f)::S(J)
- S(e);N_PINQ(H),P_PINR(C),P_SPINB(f)::QAR1(H)
- S(h);N_PINQ(H)::QAR1(H)
- Tries
- Try
- S(B);CHECK
- Vars
- B(f);P_SPINS(e),XS(B)::S(J)
- Refutation
- S(h);XS(B)
- Try
- B(F);
- Threat
- R1(C)
- Vars
- R(j);CHECK,XQ(H)::S(J),XR(j)
- B(f);CHECK,N_GUARD,P_SPINS(e)::S(J),XB(f)
- Q(a);XR(C)::S(B),XQ(a)
- B(f);N_GUARD,P_SPINS(e),XP(D)::S(J)
- B(f);N_PINQ(H),P_SPINS(e)::QAB1(H)
- S(e);P_PINR(C),P_SPINB(f)::S(J)
- S(e);N_PINQ(H),P_PINR(C),P_SPINB(f)::QAR1(H)
- S(e);N_PINQ(H),N_SPINR(g),P_PINR(C),P_SPINB(f)::QAR1(H)
- Refutation
- Q(a);XB(F)
- Try
- B(F);N_SPINQ(H)
- Threat
- DUALS(3)
- Vars
- B(f);CHECK,N_GUARD,P_SPINS(e)::S(J),XB(f)
- Q(a);XR(C)::S(B),XQ(a)
- R(j);P_PINB(F),XQ(H)::S(J),XR(j)
- B(f);P_SPINS(e),XB(F)::QAB1(H)
- S(e);P_PINR(C),P_SPINB(f)::QAR1(H)
- S(e);N_SPINR(g),P_PINR(C),P_SPINB(f)::QAR1(H)
- Refutation
- Q(a);
- Try
- B(F);
- Threat
- R1(C)
- Vars
- R(j);CHECK,XQ(H)::S(J),XR(j)
- B(f);CHECK,N_GUARD,P_SPINS(e)::S(J),XB(f)
- Q(a);XR(C)::S(B),XQ(a)
- B(f);N_GUARD,P_SPINS(e),XP(D)::S(J)
- B(f);N_PINQ(H),P_SPINS(e)::QAB1(H)
- S(e);P_PINR(C),P_SPINB(f)::S(J)
- S(e);N_PINQ(H),P_PINR(C),P_SPINB(f)::QAR1(H)
- S(e);N_PINQ(H),N_SPINR(g),P_PINR(C),P_SPINB(f)::QAR1(H)
- Refutation
- Q(a);
- Try
- Actual
- B(F);
- Threat
- R1(C)
- Vars
- R(j);CHECK,XQ(H)::S(J),XR(j)
- B(f);CHECK,N_GUARD,P_SPINS(e)::S(J),XB(f)
- Q(a);XR(C)::S(B),XQ(a)
- B(f);N_GUARD,P_SPINS(e),XP(D)::S(J)
- B(f);N_PINQ(H),P_SPINS(e)::QAB1(H)
- S(e);P_PINR(C),P_SPINB(f)::S(J)
- S(e);N_PINQ(H),P_PINR(C),P_SPINB(f)::QAR1(H)
- S(e);N_PINQ(H),N_SPINR(g),P_PINR(C),P_SPINB(f)::QAR1(H)
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).