MESON Chess Problem Database
Problem Display
PID: 145316 (4K1N1/1pP2nR1/3Ppb2/QN3kPB/3Rrqp1/4BPP1/8/8 w - - 0 1)
Morse, Christopher Jeremy
The Problemist, 1968
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Bg6#
- 1...Qxd6
- 2.Sxd6#
- 1...Rxd4
- 2.Sxd4#
- 1...Re5
- 2.Rxf4#
- 1...Bxd4
- 2.Sxd4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...Sxd6+
- 2.Sxd6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...Qe5
- Tries
- 1.Sa3+?
- 1...Qe5
- 2.Bg6#
- 2.fxe4#
- 1...Re5
- 2.Rxf4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...b5!
- 1...Qe5
- 1.Sc3+?
- 1...Qe5
- 2.Bg6#
- 2.fxe4#
- 1...Re5
- 2.Rxf4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...b5!
- 1...Qe5
- 1.Sa7+?
- 1...Qe5
- 2.Bg6#
- 2.fxe4#
- 1...Re5
- 2.Rxf4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...b5!
- 1...Qe5
- 1.Ra4?
- threat
- 2.Sd4#
- 1...Sxd6+
- 2.Sxd6#
- 1...Qe5
- 2.Bg6#
- 1...Rd4
- 2.Sxd4#
- 1...Re5
- 2.Rxf4#
- 1...Bd4
- 2.Sxd4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...Ke5!
- threat
- 1.Rb4?
- threat
- 2.Sd4#
- 1...Sxd6+
- 2.Sxd6#
- 1...Qe5
- 2.Bg6#
- 1...Rd4
- 2.Sxd4#
- 1...Re5
- 2.Rxf4#
- 1...Bd4
- 2.Sxd4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- 1...Ke5!
- threat
- 1.Rxe4?
- threat
- 2.Sd4#
- 1...Sxd6+
- 2.Sxd6#
- 1...Qxf3
- 2.Bg6#
- 1...Bd4
- 2.Sxd4#
- 2.Se7#
- 1...gxf3!
- threat
- 1.fxe4+?
- 1...Ke5
- 2.Bxf4#
- 2.gxf4#
- 1...Qxe4!
- 1...Ke5
- 1.Sa3+?
- Keys
- 1.Rc4!
- threat
- 2.Sd4#
- 1...Sxd6+
- 2.Sxd6#
- 1...Ke5
- 2.Rc5#
- 1...Qe5
- 2.Bg6#
- 1...Rd4
- 2.Sxd4#
- 1...Re5
- 2.Rxf4#
- 1...Bd4
- 2.Sxd4#
- 1...Be5
- 2.Se7#
- 1...Se5
- 2.Sh6#
- 1...e5
- 2.c8Q#
- 2.c8B#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(b);SBLOCK::B(H)
- Q(b);XP(I)::QAR(E)+S(F),DCHECK,XQ(b)
- R(a);XR(D)::QAR(E)+S(F),DCHECK,XR(a)
- R(a);OGATE,SBLOCK::R1(D),XQ(b)
- B(f);XR(D)::QAR(E)+S(F),DCHECK,XB(f)
- B(f);N_GUARD,SBLOCK::S(M)
- S(h);N_GUARD,SBLOCK::S(M)
- S(h);CHECK,XP(I)::QAR(E)+S(F),DCHECK,XS(h)
- P(e);SBLOCK::P=Q
- Tries
- Try
- S(F);CHECK
- Vars
- R(a);OGATE,P_SPINR(a)::R1(D),XQ(b)
- B(f);P_SPINB(f)::S(M)
- S(h);P_SPINS(h)::S(M)
- P(e);P_SPINP(e),S_CUTB(f),S_CUTP(g),S_CUTQ(b),S_CUTR(a),S_CUTS(h)::P=Q
- Refutation
- P(g);P_SPINP(g)
- Try
- S(F);CHECK
- Vars
- R(a);OGATE,P_SPINR(a)::R1(D),XQ(b)
- B(f);P_SPINB(f)::S(M)
- S(h);P_SPINS(h)::S(M)
- P(e);P_SPINP(e),S_CUTB(f),S_CUTP(g),S_CUTQ(b),S_CUTR(a),S_CUTS(h)::P=Q
- Refutation
- P(g);P_SPINP(g)
- Try
- S(F);CHECK
- Vars
- R(a);OGATE,P_SPINR(a)::R1(D),XQ(b)
- B(f);P_SPINB(f)::S(M)
- S(h);P_SPINS(h)::S(M)
- P(e);P_SPINP(e),S_CUTB(f),S_CUTP(g),S_CUTQ(b),S_CUTR(a),S_CUTS(h)::P=Q
- Refutation
- P(g);P_SPINP(g)
- Try
- R(D);
- Threat
- QAR(E)+S(F),DCHECK
- Vars
- S(h);CHECK,XP(I)::QAR(E)+S(F),DCHECK,XS(h)
- Q(b);SBLOCK::B(H)
- R(a);::QAR(E)+S(F),DCHECK,XR(a)
- R(a);OGATE,SBLOCK::R1(D),XQ(b)
- B(f);::QAR(E)+S(F),DCHECK,XB(f)
- B(f);N_GUARD,SBLOCK::S(M)
- S(h);N_GUARD,SBLOCK::S(M)
- P(e);SBLOCK::P=Q
- Refutation
- K(d);P-FLIGHT
- Try
- R(D);
- Threat
- QAR(E)+S(F),DCHECK
- Vars
- S(h);CHECK,XP(I)::QAR(E)+S(F),DCHECK,XS(h)
- Q(b);SBLOCK::B(H)
- R(a);::QAR(E)+S(F),DCHECK,XR(a)
- R(a);OGATE,SBLOCK::R1(D),XQ(b)
- B(f);::QAR(E)+S(F),DCHECK,XB(f)
- B(f);N_GUARD,SBLOCK::S(M)
- S(h);N_GUARD,SBLOCK::S(M)
- P(e);SBLOCK::P=Q
- Refutation
- K(d);P-FLIGHT
- Try
- R(D);XR(a)
- Threat
- QAR(E)+S(F),DCHECK
- Vars
- S(h);CHECK,XP(I)::QAR(E)+S(F),DCHECK,XS(h)
- Q(b);XP(B)::B(H)
- Refutation
- P(c);XP(B)
- Try
- P(B);CHECK,XR(a)
- Refutation
- Q(b);XP(B)
- Try
- Actual
- R(D);
- Threat
- QAR(E)+S(F),DCHECK
- Vars
- S(h);CHECK,XP(I)::QAR(E)+S(F),DCHECK,XS(h)
- K(d);P-FLIGHT::R(D)
- Q(b);SBLOCK::B(H)
- R(a);::QAR(E)+S(F),DCHECK,XR(a)
- R(a);OGATE,SBLOCK::R1(D),XQ(b)
- B(f);::QAR(E)+S(F),DCHECK,XB(f)
- B(f);N_GUARD,SBLOCK::S(M)
- S(h);N_GUARD,SBLOCK::S(M)
- P(e);SBLOCK::P=Q
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).