MESON Chess Problem Database
Problem Display
PID: 55064 (2B2b2/3K4/8/1ppp1N2/RPk5/1nPnPN2/2R5/8 w - - 0 1)
Howard, David M
Problem Observer, 2004
#2
9 + 7
| 136 | Problem Observer | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Bd6
- 2.Sxd6#
- 1...Bh6
- 2.Sd6#
- 1...Bg7
- 2.Sd6#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sxb4
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5+
- 2.Sxe5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Bd6
- Tries
- 1.Kc7?
- 1...Bd6+
- 2.Sxd6#
- 1...Sxb4
- 2.Se5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...d4
- 2.Be6#
- 1...Bh6
- 2.Sd6#
- 1...Bg7
- 2.Sd6#
- 1...Be7!
- 1...Bd6+
- 1.Kd8?
- 1...Sxb4
- 2.Se5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...d4
- 2.Be6#
- 1...Bd6
- 2.Sxd6#
- 1...Bh6
- 2.Sd6#
- 1...Bg7
- 2.Sd6#
- 1...Be7+!
- 1...Sxb4
- 1.Ke8?
- 1...Sxb4
- 2.Se5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...d4
- 2.Be6#
- 1...Bd6
- 2.Sxd6#
- 1...Bh6
- 2.Sd6#
- 1...Bg7
- 2.Sd6#
- 1...Be7!
- 1...Sxb4
- 1.Bb7?
- 1...Se5+
- 2.Sxe5#
- 1...Sxb4
- 2.Se5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Bd6
- 2.Sxd6#
- 1...Bh6
- 2.Sd6#
- 1...Bg7
- 2.Sd6#
- 1...d4
- 2.cxd4#
- 1...Be7!
- 1...Se5+
- 1.Kc7?
- Keys
- 1.e4!
- threat
- 2.Se3#
- 1...Se5+
- 2.Sxe5#
- 1...Sxb4
- 2.Se5#
- 1...bxa4
- 2.Ba6#
- 1...cxb4
- 2.cxb4#
- 1...Sa1
- 2.Sd2#
- 1...Sbc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sd4
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Sdc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sb2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Bh6
- 2.Sd6#
- 1...d4
- 2.cxd4#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- B(g);N_GUARD::S(G),XB(g)
- B(g);N_GUARD::S(G)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- S(b);CHECK,N_GUARD::S(D),XS(b)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- B(g);CHECK,N_GUARD::S(G),XB(g)
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- P(f);OGATEB::B(I)
- B(g);N_GUARD::S(G)
- Refutation
- B(g);
- Try
- K(H);P-FLIGHT
- Vars
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- P(f);OGATEB::B(I)
- B(g);N_GUARD::S(G),XB(g)
- B(g);N_GUARD::S(G)
- Refutation
- B(g);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- P(f);OGATEB::B(I)
- B(g);N_GUARD::S(G),XB(g)
- B(g);N_GUARD::S(G)
- Refutation
- B(g);
- Try
- B(I);
- Vars
- S(b);CHECK,N_GUARD::S(D),XS(b)
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- B(g);N_GUARD::S(G),XB(g)
- B(g);N_GUARD::S(G)
- P(f);OGATE::R(A)+P(B),XP(f)
- Refutation
- B(g);
- Try
- Actual
- P(C);
- Threat
- S(G)
- Vars
- S(b);CHECK,N_GUARD::S(D),XS(b)
- S(b);N_GUARD,P_SPINS(b),XP(F)::S(D)
- P(d);OGATEB,XR(E)::B(I)
- P(e);OGATE,P_SPINP(e),XP(F)::R(A)+P(B),XP(e)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(b);N_GUARD::S(D)
- B(g);N_GUARD::S(G)
- P(f);OGATE::R(A)+P(B),XP(f)
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).