MESON Chess Problem Database
Problem Display
PID: 45732 (6QN/p4R1K/N1ppb2P/2PkpR1P/2n1p3/p1P5/B7/8 w - - 0 1)
Delobel, Bernard
StrateGems, 2002
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Bxf5+
- 2.Rxf5#
- 1...Bd7
- 2.Rxd7#
- 1...Bxf7
- 2.Qxf7#
- 1...Bc8
- 2.Rd7#
- 1...e3
- 2.Qg2#
- 1...dxc5
- 2.Rd7#
- 1...Bxf5+
- Tries
- 1.Kg6?
- 1...Bxf5+
- 2.Rxf5#
- 1...Bxf7+
- 2.Qxf7#
- 1...dxc5
- 2.Rd7#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3!
- 1...Bxf5+
- 1.Kg7?
- 1...Bxf5
- 2.Rxf5#
- 1...Bxf7
- 2.Qxf7#
- 1...dxc5
- 2.Rd7#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3!
- 1...Bxf5
- 1.Sg6?
- threat
- 2.Sf4#
- 2.Se7#
- 1...Bxf5
- 2.Rxf5#
- 1...Bxf7
- 2.Sf4#
- 2.Qxf7#
- 1...dxc5
- 2.Rd7#
- 1...Bd7
- 2.Sf4#
- 2.Rxd7#
- 1...Bc8
- 2.Sf4#
- 2.Rd7#
- 1...e3!
- threat
- 1.Bb3?
- 1...Bxf5+
- 2.Rxf5#
- 1...Bxf7
- 2.Qxf7#
- 1...dxc5
- 2.Rd7#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3
- 2.Qg2#
- 1...a2!
- 1...Bxf5+
- 1.Rf1?
- threat
- 2.Rd1#
- 1...Bf5+
- 2.R7xf5#
- 1...Bxf7
- 2.Qxf7#
- 1...Bh3
- 2.R7f5#
- 1...Bg4
- 2.R7f5#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3!
- threat
- 1.Rf2?
- threat
- 2.Rd2#
- 1...Bf5+
- 2.R7xf5#
- 1...Bxf7
- 2.Qxf7#
- 1...Bh3
- 2.R7f5#
- 1...Bg4
- 2.R7f5#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3!
- threat
- 1.Rxe5+?
- 1...dxe5
- 2.Rd7#
- 1...Kxe5!
- 1...dxe5
- 1.Rg5?
- 1...Bf5+
- 2.Rfxf5#
- 1...Bxf7
- 2.Qxf7#
- 1...dxc5
- 2.Rd7#
- 1...Bh3
- 2.Rff5#
- 1...Bg4
- 2.Rff5#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3!
- 1...Bf5+
- 1.R7f6?
- threat
- 2.Qxe6#
- 1...e3
- 2.Qg2#
- 1...Bf7
- 2.Rxd6#
- 2.Qxf7#
- 1...Bxg8+!
- threat
- 1.Rxa7?
- 1...dxc5
- 2.Rd7#
- 1...Bf7
- 2.Qxf7#
- 1...e3
- 2.Qg2#
- 1...Bxg8+!
- 1...dxc5
- 1.Rb7?
- 1...dxc5
- 2.Rd7#
- 1...Bf7
- 2.Qxf7#
- 1...e3
- 2.Qg2#
- 1...Bxg8+!
- 1...dxc5
- 1.Rc7?
- 1...dxc5
- 2.Rd7#
- 1...Bf7
- 2.Qxf7#
- 1...e3
- 2.Qg2#
- 1...Bxg8+!
- 1...dxc5
- 1.Rd7?
- threat
- 2.Rxd6#
- 1...e3
- 2.Qg2#
- 1...Bxg8+!
- threat
- 1.Re7?
- threat
- 2.Qxe6#
- 1...e3
- 2.Qg2#
- 1...Bf7
- 2.Qxf7#
- 1...Bxg8+!
- threat
- 1.Rf8?
- 1...dxc5
- 2.Rd8#
- 1...Bf7
- 2.Qxf7#
- 1...e3
- 2.Qg2#
- 1...Bxg8+!
- 1...dxc5
- 1.Qg1?
- threat
- 2.Sb4#
- 2.Sc7#
- 2.Qd4#
- 2.Qd1#
- 1...Bxf7
- 2.Sc7#
- 1...dxc5
- 2.Qxc5#
- 2.Qd1#
- 1...Bd7
- 2.Sc7#
- 1...Bc8
- 2.Sc7#
- 1...e3
- 2.Qh1#
- 2.Qg2#
- 1...Bxf5+!
- threat
- 1.Kg6?
- Keys
- 1.Rf4!
- 1...Bf5+
- 2.R7xf5#
- 1...Bxf7
- 2.Qxf7#
- 1...exf4
- 2.Rf5#
- 1...dxc5
- 2.Rd7#
- 1...Bh3
- 2.R7f5#
- 1...Bg4
- 2.R7f5#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Rd7#
- 1...e3
- 2.Bxc4#
- 1...Bf5+
- 1.Rf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(h);CHECK,N_SPINP(e),OGATE,XR(D)::QAB(J)+R(H),XB(h)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- P(c);OGATEB::QAB(J)
- P(g);OGATEB,XP(C)::R(H)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- B(h);CHECK,N_SPINP(e),OGATE,XR(D)::QAB(J)+R(H),XB(h)
- B(h);CHECK,OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- Refutation
- P(c);
- Try
- K(I);P-FLIGHT
- Vars
- B(h);N_SPINP(e),OGATE,XR(D)::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- Refutation
- P(c);
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- B(h);N_SPINP(e),OGATE,P_PINS(K),XR(D)::QAB(J)+R(H),XB(h)
- P(g);OGATEB,XP(C)::R(H)
- Refutation
- P(c);
- Try
- B(A);
- Vars
- B(h);CHECK,N_SPINP(e),OGATE,XR(D)::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- P(c);OGATEB::QAB(J)
- Refutation
- P(a);
- Try
- R(D);N_PINP(e)
- Threat
- R(D)
- Vars
- B(h);CHECK,OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- Refutation
- P(c);
- Try
- R(D);N_PINP(e)
- Threat
- R(D)
- Vars
- B(h);CHECK,OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- B(h);OGATEB::QAB(J)+R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- Refutation
- P(c);
- Try
- R(D);CHECK,XP(e)
- Vars
- P(g);SBLOCK,XR(D)::R(H)
- Refutation
- K(d);N_SPINS(b),P-FLIGHT,XR(D)
- Try
- R(D);
- Vars
- B(h);CHECK,N_SPINP(e),OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J)+R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- Refutation
- P(c);
- Try
- R(H);P_PINB(h)
- Threat
- QAB1(J),XB(h)
- Vars
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h),XP(i)
- Vars
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J),XB(h)
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h)
- Vars
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J),XB(h)
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h)
- Vars
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J),XB(h)
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h)
- Threat
- R1(H),XP(g)
- Vars
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h)
- Threat
- QAB1(J),XB(h)
- Vars
- P(c);OGATEB::QAB(J)
- B(h);OGATEB::QAB(J),XB(h)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- R(H);P_PINB(h)
- Vars
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J),XB(h)
- P(c);OGATEB::QAB(J)
- Refutation
- B(h);CHECK,N_SPINB(h),XQ(J)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- B(h);XR(H)::S(F)
- B(h);::S(F)
- Refutation
- B(h);CHECK,N_SPINP(e),XR(D)
- Try
- Actual
- R(D);N_PINP(e)
- Vars
- B(h);CHECK,OGATEB::QAB(J)+R(H),XB(h)
- B(h);OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
- P(e);OGATEB,XR(D)::R(H)
- P(g);OGATEB,XP(C)::R(H)
- B(h);OGATEB::QAB(J)+R(H)
- B(h);OGATEB::QAB(J)+R(H),XB(h)
- P(c);::B(A),XS(b)
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).