MESON Chess Problem Database
Problem Display
PID: 63437 (2Kn4/3Bp1p1/1p2n1R1/1Pp1k3/2Pb1p2/B2Q1p2/5P2/8 w - - 0 1)
Gunn, Robert Ivan
Chess, 1945
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Kd6
- 2.Qxd4#
- 1...Ba1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bxf2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Sf8
- 2.Qf5#
- 1...Sc6
- 2.Rxe6#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...Kd6
- Tries
- 1.Kb8?
- 1...Kd6
- 2.Qxd4#
- 1...Bxf2
- 2.Qd5#
- 1...Ba1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Sf8
- 2.Qf5#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...Sc6+!
- 1...Kd6
- 1.Bb2?
- 1...Bxb2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Sg5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Sf8
- 2.Qf5#
- 1...Sc6
- 2.Rxe6#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...Kd6!
- 1...Bxb2
- 1.Bb4?
- 1...Kd6
- 2.Qxd4#
- 1...Bxf2
- 2.Qd5#
- 1...Ba1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Sf8
- 2.Qf5#
- 1...Sc6
- 2.Rxe6#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...cxb4!
- 1...Kd6
- 1.Bxc5?
- 1...Bxf2
- 2.Qd5#
- 1...Bxc5
- 2.Qd5#
- 1...Sxc5
- 2.Qf5#
- 1...Ba1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.Bxd4#
- 2.Qf5#
- 2.Qxd4#
- 1...Sc7
- 2.Bxd4#
- 2.Qf5#
- 2.Qxd4#
- 1...Sf8
- 2.Bxd4#
- 2.Qf5#
- 2.Qxd4#
- 1...Sc6
- 2.Rxe6#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...bxc5!
- 1...Bxf2
- 1.Rg5+?
- 1...Kd6
- 2.Rd5#
- 1...Kf6
- 2.Qf5#
- 2.Qg6#
- 1...Sxg5!
- 1...Kd6
- 1.Qe4+?
- 1...Kd6
- 2.Qd5#
- 2.Qxd4#
- 1...Kxe4!
- 1...Kd6
- 1.Qf5+?
- 1...Kd6
- 2.Qd5#
- 1...Kxf5!
- 1...Kd6
- 1.Kb8?
- Keys
- 1.Bc1!
- 1...Kd6
- 2.Bxf4#
- 1...Bxf2
- 2.Qd5#
- 1...Ba1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Sf8
- 2.Qf5#
- 1...Sc6
- 2.Rxe6#
- 1...Sb7
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...Kd6
- 1.Bc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(e);P_SPINB(b),P_SPINP(d),P_SPINS(g),S_FLIGHT::QAR2(C),XB(b)
- B(b);OGATE::QAR1(C)
- B(b);OGATE,XP(A)::QAR1(C)
- S(g);::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- K(e);P_SPINB(b),P_SPINP(d),P_SPINS(g),S_FLIGHT::QAR2(C),XB(b)
- B(b);OGATE,XP(A)::QAR1(C)
- B(b);OGATE::QAR1(C)
- S(g);::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
- Refutation
- S(j);CHECK
- Try
- B(B);P_PINB(b)
- Vars
- B(b);N_SPINB(b),OGATE,XB(B)::QAR1(C)
- B(b);OGATE::QAR1(C)
- S(g);::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
- Refutation
- K(e);P_SPINS(g),S_FLIGHT
- Try
- B(B);
- Vars
- K(e);P_SPINB(b),P_SPINP(d),P_SPINS(g),S_FLIGHT::QAR2(C),XB(b)
- B(b);OGATE,XP(A)::QAR1(C)
- B(b);OGATE::QAR1(C)
- S(g);::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
- Refutation
- P(d);XB(B)
- Try
- B(B);XP(d)
- Vars
- B(b);OGATE,XP(A)::QAR1(C)
- B(b);OGATE,XB(B)::QAR1(C)
- S(g);XB(B)::QAR1(C)
- B(b);OGATE::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
- Refutation
- P(f);XB(B)
- Try
- R(F);CHECK
- Vars
- K(e);OGATE,P_SPINB(b),P_SPINP(d),S_FLIGHT::R1(F)
- Refutation
- S(g);XR(F)
- Try
- Q(C);CHECK
- Refutation
- K(e);P-FLIGHT,XQ(C)
- Try
- Q(C);CHECK
- Vars
- K(e);OGATE,P_SPINP(d),P_SPINS(g),S_FLIGHT::QAR1(C)
- Refutation
- K(e);P-FLIGHT,P_SPINS(g),XQ(C)
- Try
- Actual
- B(B);
- Vars
- K(e);P_SPINB(b),P_SPINS(g),S_FLIGHT::B(B),XP(c)
- B(b);OGATE,XP(A)::QAR1(C)
- B(b);OGATE::QAR1(C)
- S(g);::QAR1(C)
- S(j);N_GUARD::R1(F),XS(g)
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).