MESON Chess Problem Database
Problem Display
PID: 180624 (8/1N1pr3/1Np3R1/1bp1k2r/2P4p/p3KpP1/1q6/BB2R2Q w - - 0 1)
Wirajaya, Daniel
StrateGems, 2017
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Kxf3#
- 1...Rf5
- 2.Kd3#
- 1...Re6
- 2.Sxd7#
- 1...Re8
- 2.Sxd7#
- 1...a2
- 2.Bxb2#
- 1...f2
- 2.Qe4#
- 1...hxg3
- 2.Qxh5#
- 1...Qc3+
- Tries
- 1.Rd6?
- threat
- 2.Kxf3#
- 1...Qc3+
- 2.Kf2#
- 2.Bxc3#
- 1...Bxc4
- 2.Sxc4#
- 1...Re6
- 2.Sxd7#
- 1...Rf5
- 2.Kd3#
- 1...f2
- 2.Qe4#
- 1...Rf7!
- threat
- 1.Qxf3?
- threat
- 2.Kd3#
- 2.Qe4#
- 2.Qxh5#
- 2.Qf4#
- 2.Qf6#
- 1...Qc3+
- 2.Bxc3#
- 1...Bxc4
- 2.Sxc4#
- 2.Qe4#
- 2.Qxh5#
- 2.Qf4#
- 2.Qf6#
- 1...Rf5
- 2.Kd3#
- 2.Qe4#
- 2.Qxf5#
- 1...Rg5
- 2.Kd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Rh6
- 2.Kd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Rhh7
- 2.Kd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Rh8
- 2.Kd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Re6
- 2.Kd3#
- 2.Sxd7#
- 2.Qe4#
- 2.Qxh5#
- 2.Qf4#
- 1...Rf7
- 2.Kd3#
- 2.Qe4#
- 1...Reh7
- 2.Kd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...d5
- 2.Kd3#
- 2.Qxh5#
- 2.Qf4#
- 2.Qf6#
- 1...Qd4+!
- threat
- 1.Qh2?
- threat
- 2.gxh4#
- 2.g4#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Kxf3#
- 1...hxg3
- 2.Qxg3#
- 2.Qxh5#
- 1...Rf5
- 2.Kd3#
- 1...Rg5
- 2.g4#
- 1...h3
- 2.g4#
- 1...Rf7!
- threat
- 1.Qxh4?
- threat
- 2.Kxf3#
- 2.Qf6#
- 2.Qxe7#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...Qc3+
- 2.Kf2#
- 2.Bxc3#
- 1...Qd4+
- 2.Kxf3#
- 1...Bxc4
- 2.Qf6#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...Rf7
- 2.Qe4#
- 1...Rf5
- 2.Kd3#
- 2.Qxe7#
- 2.Qe4#
- 1...Rg5
- 2.Kxf3#
- 2.Qxg5#
- 2.Qe4#
- 2.Qf4#
- 1...Rh6
- 2.Kxf3#
- 2.Qg5#
- 2.Qf6#
- 2.Qxe7#
- 2.Qe4#
- 2.Qf4#
- 1...Rhh7
- 2.Kxf3#
- 2.Qg5#
- 2.Qf6#
- 2.Qe4#
- 2.Qf4#
- 1...Rh8
- 2.Kxf3#
- 2.Qg5#
- 2.Qf6#
- 2.Qxe7#
- 2.Qe4#
- 2.Qf4#
- 1...Re6
- 2.Kxf3#
- 2.Sxd7#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...Rg7
- 2.Kxf3#
- 2.Qf6#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...Reh7
- 2.Kxf3#
- 2.Qf6#
- 2.Qe4#
- 2.Qf4#
- 1...Re8
- 2.Kxf3#
- 2.Sxd7#
- 2.Qf6#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...f2
- 2.Qf6#
- 2.Qxe7#
- 2.Qe4#
- 2.Qf4#
- 2.Qxh5#
- 1...d5
- 2.Kxf3#
- 2.Qf6#
- 2.Qxe7#
- 2.Qf4#
- 2.Qxh5#
- 1...Rxh4!
- threat
- 1.Rd6?
- Keys
- 1.Sd6!
- threat
- 2.Kd3#
- 1...Qc3+
- 2.Bxc3#
- 1...Qd4+
- 2.Kxf3#
- 1...Bxc4
- 2.Sdxc4#
- 1...hxg3
- 2.Qxh5#
- 1...Re6
- 2.Sf7#
- 1...f2
- 2.Qe4#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Q(a);CHECK::R(C)+K(E),XP(c)
- R(h);SBLOCK::R(C)+K(E)
- R(k);N_GUARD::S(H),XP(j)
- P(b);N_GUARD::B(A),XQ(a)
- P(c);OGATE::QAR1(D)
- P(d);OGATE,XP(F)::QAR(D),XR(h)
- Tries
- Try
- R(I);
- Threat
- R(C)+K(E),XP(c)
- Vars
- B(e);XP(G)::S(H),XB(e)
- R(k);N_GUARD::S(H),XP(j)
- R(h);SBLOCK::R(C)+K(E)
- P(c);OGATE::QAR1(D)
- Refutation
- R(k);
- Try
- Q(D);XP(c)
- Threat
- DUALS(5)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Q(a);CHECK::R(C)+K(E),XP(c)
- R(h);SBLOCK::R(C)+K(E)
- R(h);::QAB(D)+P(F)
- P(d);::QAB(D)+P(F)
- Refutation
- R(k);
- Try
- Q(D);XP(d)
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK::R(C)+K(E),XP(c)
- R(k);::QAR1(D)
- Refutation
- R(h);XQ(D)
- Try
- Actual
- S(J);
- Threat
- R(C)+K(E)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Q(a);CHECK::R(C)+K(E),XP(c)
- B(e);XP(G)::S(J),XB(e)
- P(d);OGATE,XP(F)::QAR(D),XR(h)
- R(k);N_GUARD::S(J)
- P(c);OGATE::QAR1(D)
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).