MESON Chess Problem Database
Problem Display
PID: 228253 (8/n2K4/4BN2/4N1p1/1P1k2p1/3p1pP1/3B1PpP/5nQ1 w - - 0 1)
Howard, David M
Problem Observer, 2020
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Bc3#
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5
- Tries
- 1.Ke7?
- 1...Sc6+
- 2.Sxc6#
- 1...Kxe5
- 2.Bc3#
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Sc8+!
- 1...Sc6+
- 1.Kd8?
- 1...Sc6+
- 2.Sxc6#
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sc6+
- 1.Ke8?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.Ba2?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.Bb3?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.Bd5?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.Bf7?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.Bg8?
- 1...Sxd2
- 2.Qa1#
- 1...Sxh2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...Sb5
- 2.Sc6#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5!
- 1...Sxd2
- 1.h4?
- 1...Kxe5
- 2.Bc3#
- 1...Sxd2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...gxh4 ep
- 2.Sxf3#
- 1...Sb5
- 2.Sc6#
- 1...Sh2
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...gxh4!
- 1...Kxe5
- 1.Ke7?
- Keys
- 1.h3!
- 1...Kxe5
- 2.Bc3#
- 1...Sxd2
- 2.Qa1#
- 1...Sxg3
- 2.Qa1#
- 1...gxh3
- 2.Sxf3#
- 1...Sb5
- 2.Sc6#
- 1...Sh2
- 2.Qa1#
- 1...Se3
- 2.Qa1#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Kxe5
- 1.h3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(e);S_FLIGHT,XS(G)::B(B)
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- S(h);CHECK,N_GUARD::S(G),XS(h)
- K(e);S_FLIGHT,XS(G)::B(B)
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- Refutation
- S(h);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- S(h);CHECK,N_GUARD::S(G),XS(h)
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- K(J);S_FLIGHT
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- B(H);
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- B(H);
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- B(H);
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- B(H);
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- B(H);
- Vars
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(D)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- P(D);
- Vars
- K(e);S_FLIGHT,XS(G)::B(B)
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- P(f);EP,N_GUARD,XP(D)::S(G),XP(d)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- P(g);XP(D)
- Try
- Actual
- P(D);
- Vars
- K(e);S_FLIGHT,XS(G)::B(B)
- S(a);OGATE,XB(B)::QAB(A)
- S(a);OGATE,XP(E)::QAB(A)
- P(f);N_GUARD,XP(D)::S(G),XP(d)
- S(h);N_GUARD::S(G)
- S(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G),XS(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).