MESON Chess Problem Database
Problem Display
PID: 179136 (5NK1/n3pp1P/4PkP1/2pR4/2Pp1P1r/5Nb1/p2p1pR1/Bbnq4 w - - 0 1)
Armeni, Alberto
Problem Observer, 2010
#2
11 + 14
SOLUTION
- SOUND
- Sets
- 1...Rxf4
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.h8Q#
- 2.h8B#
- 1...Rxf4
- Tries
- 1.Sxh4?
- threat
- 2.h8Q#
- 2.h8B#
- 1...Bxg6
- 2.h8Q#
- 2.h8B#
- 1...Bxf4
- 2.h8Q#
- 2.h8B#
- 1...Bxh4
- 2.h8Q#
- 2.h8B#
- 1...fxe6
- 2.Sd7#
- 2.h8Q#
- 2.h8B#
- 1...fxg6
- 2.h8Q#
- 2.h8B#
- 1...f1Q
- 2.h8Q#
- 2.h8B#
- 1...f1S
- 2.h8Q#
- 2.h8B#
- 1...f1B
- 2.h8Q#
- 2.h8B#
- 1...f1R
- 2.h8Q#
- 2.h8B#
- 1...Qc2
- 2.h8Q#
- 2.h8B#
- 1...Qe2
- 2.h8Q#
- 2.h8B#
- 1...Qb3
- 2.h8Q#
- 2.h8B#
- 1...Qf3
- 2.h8Q#
- 2.h8B#
- 1...Qa4
- 2.h8Q#
- 2.h8B#
- 1...Qg4
- 2.h8Q#
- 2.h8B#
- 1...Qe1
- 2.h8Q#
- 2.h8B#
- 1...Qf1
- 2.h8Q#
- 2.h8B#
- 1...Qg1
- 2.h8Q#
- 2.h8B#
- 1...Qh1
- 2.h8Q#
- 2.h8B#
- 1...Bc2
- 2.h8Q#
- 2.h8B#
- 1...Bd3
- 2.h8Q#
- 2.h8B#
- 1...Be4
- 2.h8Q#
- 2.h8B#
- 1...Bf5
- 2.Rxf5#
- 2.h8Q#
- 2.h8B#
- 1...Bh2
- 2.h8Q#
- 2.h8B#
- 1...Se2
- 2.h8Q#
- 2.h8B#
- 1...Sb3
- 2.h8Q#
- 2.h8B#
- 1...Sd3
- 2.Rf5#
- 2.h8Q#
- 2.h8B#
- 1...Sb5
- 2.h8Q#
- 2.h8B#
- 1...Sc6
- 2.h8Q#
- 2.h8B#
- 1...Sc8
- 2.h8Q#
- 2.h8B#
- 1...Qh5!
- threat
- 1.Sd7+?
- 1...Kxe6
- 2.Sg5#
- 1...Kxg6!
- 1...Kxe6
- 1.Rh5?
- threat
- 2.h8Q#
- 2.h8B#
- 1...Qxf3
- 2.h8Q#
- 2.h8B#
- 1...Rxf4
- 2.h8Q#
- 2.h8B#
- 1...Bxg6
- 2.h8Q#
- 2.h8B#
- 1...Bxf4
- 2.h8Q#
- 2.h8B#
- 1...fxe6
- 2.h8Q#
- 2.h8B#
- 1...fxg6
- 2.h8Q#
- 2.h8B#
- 1...f1Q
- 2.h8Q#
- 2.h8B#
- 1...f1S
- 2.h8Q#
- 2.h8B#
- 1...f1B
- 2.h8Q#
- 2.h8B#
- 1...f1R
- 2.h8Q#
- 2.h8B#
- 1...Qc2
- 2.h8Q#
- 2.h8B#
- 1...Qe2
- 2.h8Q#
- 2.h8B#
- 1...Qb3
- 2.h8Q#
- 2.h8B#
- 1...Qa4
- 2.h8Q#
- 2.h8B#
- 1...Qe1
- 2.h8Q#
- 2.h8B#
- 1...Qf1
- 2.h8Q#
- 2.h8B#
- 1...Qg1
- 2.h8Q#
- 2.h8B#
- 1...Qh1
- 2.h8Q#
- 2.h8B#
- 1...Rh1
- 2.h8Q#
- 2.h8B#
- 1...Rh2
- 2.h8Q#
- 2.h8B#
- 1...Rh3
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.h8Q#
- 2.h8B#
- 1...Bc2
- 2.h8Q#
- 2.h8B#
- 1...Bd3
- 2.h8Q#
- 2.h8B#
- 1...Be4
- 2.h8Q#
- 2.h8B#
- 1...Bf5
- 2.h8Q#
- 2.h8B#
- 1...Bh2
- 2.h8Q#
- 2.h8B#
- 1...Se2
- 2.h8Q#
- 2.h8B#
- 1...Sb3
- 2.h8Q#
- 2.h8B#
- 1...Sd3
- 2.h8Q#
- 2.h8B#
- 1...Sb5
- 2.h8Q#
- 2.h8B#
- 1...Sc6
- 2.h8Q#
- 2.h8B#
- 1...Sc8
- 2.h8Q#
- 2.h8B#
- 1...Rxh5!
- threat
- 1.Sxh4?
- Keys
- 1.Sxd4!
- threat
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 1...Rxf4
- 2.h8Q#
- 2.h8B#
- 1...Bxf4
- 2.Sd7#
- 1...cxd4
- 2.Bxd4#
- 1...fxe6
- 2.Sdxe6#
- 1...Qc2
- 2.Sxc2#
- 1...Qe2
- 2.Sxe2#
- 1...Qb3
- 2.Sxb3#
- 1...Qf3
- 2.Sxf3#
- 1...Qh5
- 2.Sf5#
- 1...Qe1
- 2.Se2#
- 1...Rh5
- 2.Sf5#
- 1...Bc2
- 2.Sxc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 1...Bf5
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sxf5#
- 2.Sc6#
- 2.Rxf5#
- 1...Se2
- 2.Sxe2#
- 1...Sb3
- 2.Sxb3#
- 1...Sd3
- 2.Rf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sxc6#
- threat
- 1.Sxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 15
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD,XP(E)::P=Q
- R(i);N_GUARD,P_PINP(H)::P=Q
- Tries
- Try
- S(C);XR(i)
- Threat
- P=Q
- Vars
- B(a);XP(H)::P=Q
- B(g);XP(E)::P=Q
- B(g);XS(C)::P=Q
- P(n);XP(H)::P=Q
- P(f);::P=Q
- Q(c);::P=Q
- Q(c);P_PINP(H)::P=Q
- B(a);::P=Q
- B(g);::P=Q
- S(b);::P=Q
- S(l);::P=Q
- Refutation
- Q(c);
- Try
- S(J);CHECK
- Vars
- K(k);N_SPINP(h),P-FLIGHT,XP(G)::S(C)
- Refutation
- K(k);N_SPINP(h),P-FLIGHT,P_SPINB(g),XP(H)
- Try
- R(F);
- Threat
- P=Q
- Vars
- Q(c);XS(C)::P=Q
- R(i);XP(E)::P=Q
- B(a);XP(H)::P=Q
- B(g);XP(E)::P=Q
- P(n);XP(G)::P=Q
- P(n);XP(H)::P=Q
- P(f);::P=Q
- Q(c);::P=Q
- R(i);::P=Q
- R(i);P_PINP(H)::P=Q
- B(a);::P=Q
- B(g);::P=Q
- S(b);::P=Q
- S(l);::P=Q
- Refutation
- R(i);XR(F)
- Try
- Actual
- S(C);XP(h)
- Threat
- DUALS(7)
- Vars
- R(i);N_GUARD,XP(E)::P=Q
- B(g);XP(E)::S(J)
- P(j);OGATE,P_SPINP(j),XS(C)::B(A),XP(j)
- P(n);XP(G)::B(A)+S(C),XP(n)
- Q(c);::B(A)+S(C),XQ(c)
- Q(c);::B(A)+S(C)
- R(i);::B(A)+S(C)
- S(b);::B(A)+S(C),XS(b)
- S(b);S_CUTB(a)::R1(F)
- S(l);::B(A)+S(C),XS(l)
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).