MESON Chess Problem Database
Problem Display
PID: 152618 (1Q1b4/N1N1p3/p1p5/k1p4r/8/K1R2b1r/2pq4/2n1Bn2 w - - 0 1)
Maleika, Gerhard
Comm., The Problemist, 2014
#2
6 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxc3+
- 2.Bxc3#
- 1...Qf4
- 2.Rxc5#
- 1...Qg5
- 2.Rxc5#
- 1...Qh6
- 2.Rxc5#
- 1...Qd1
- 2.Rxc5#
- 1...Qe2
- 2.Rxc5#
- 1...Qf2
- 2.Rxc5#
- 1...Qg2
- 2.Rxc5#
- 1...Qh2
- 2.Rxc5#
- 1...Qd4
- 2.Rxc5#
- 1...Qd5
- 2.Rxc5#
- 1...Qd6
- 2.Rxc5#
- 1...Qd7
- 2.Rxc5#
- 1...Rh4
- 2.Rxc5#
- 1...Rd5
- 2.Sxc6#
- 1...Rh6
- 2.Rxc5#
- 1...Rh7
- 2.Rxc5#
- 1...Rh8
- 2.Rxc5#
- 1...Bd1
- 2.Sxc6#
- 1...Be2
- 2.Sxc6#
- 1...Bg4
- 2.Sxc6#
- 1...Bxc7
- 2.Qxc7#
- 1...c4
- 2.Qb4#
- 1...e5
- 2.Rxc5#
- 1...Qxc3+
- Tries
- 1.Sc8?
- threat
- 2.Qb6#
- 1...Qxc3+
- 2.Bxc3#
- 1...Bxc7!
- threat
- 1.Qb7?
- threat
- 2.Qxa6#
- 1...Qxc3+
- 2.Bxc3#
- 1...Bxc7
- 2.Qxc7#
- 1...Qe2
- 2.Rxc5#
- 1...Be2
- 2.Sxc6#
- 1...Qd3!
- threat
- 1.Sc8?
- Keys
- 1.Sd5!
- threat
- 2.Sxc6#
- 2.Rxc5#
- 2.Qxd8#
- 1...Qxc3+
- 2.Bxc3#
- 1...Qxd5
- 2.Rxc5#
- 1...Rxd5
- 2.Sxc6#
- 1...Bxd5
- 2.Qxd8#
- 1...cxd5
- 2.Sc6#
- 2.Rxc5#
- 2.Qxd8#
- 1...Qe3
- 2.Sxc6#
- 2.Qxd8#
- 1...Qf4
- 2.Sxc6#
- 2.Rxc5#
- 1...Qh6
- 2.Rxc5#
- 2.Qxd8#
- 1...Qh2
- 2.Sxc6#
- 2.Rxc5#
- 1...Qd3
- 2.Sxc6#
- 2.Qxd8#
- 1...Rh6
- 2.Rxc5#
- 2.Qxd8#
- 1...Rh8
- 2.Sxc6#
- 2.Rxc5#
- 1...Bd1
- 2.Sxc6#
- 2.Qxd8#
- 1...Bh1
- 2.Sxc6#
- 2.Qxd8#
- 1...Be2
- 2.Sxc6#
- 2.Qxd8#
- 1...Bg2
- 2.Sxc6#
- 2.Qxd8#
- 1...Be4
- 2.Sxc6#
- 2.Qxd8#
- 1...Bg4
- 2.Sxc6#
- 2.Qxd8#
- 1...Bb6
- 2.Qxb6#
- 1...Bc7
- 2.Sxc6#
- 2.Rxc5#
- 2.Qxc7#
- 1...Sb3
- 2.Sxc6#
- 2.Qxd8#
- 1...Sd3
- 2.Sxc6#
- 2.Qxd8#
- 1...c4
- 2.Sxc6#
- 2.Qb4#
- 2.Qxd8#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::B(A),XQ(d)
- Q(d);::B(A)+R(C),DCHECK,XP(h)
- R(i);N_GUARD::R(C),XP(h)
- R(i);S_CUTB(e)::S(D),XP(k)
- B(e);N_GUARD,P_PINR(C)::S(D),XP(k)
- B(m);OGATE,XS(E)::QAB(F),XB(m)
- P(h);N_GUARD::QAB1(F)
- P(l);S_CUTR(i)::R(C),XP(h)
- Tries
- Try
- S(D);
- Threat
- QAB1(F)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::B(A),XQ(d)
- Refutation
- B(m);XS(E)
- Try
- Q(F);
- Threat
- QAR1(F),XP(j)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::B(A),XQ(d)
- B(m);OGATE,XS(E)::QAB(F),XB(m)
- Q(d);::B(A)+R(C),DCHECK,XP(h)
- B(e);N_GUARD,P_PINR(C)::S(D),XP(k)
- Refutation
- Q(d);P_PINR(C)
- Try
- Actual
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::B(A),XQ(d)
- Q(d);XS(E)::B(A)+R(C),DCHECK,XP(h)
- R(i);XS(E)::S(D),XP(k)
- B(e);P_PINR(C),XS(E)::QAB(F),XB(m)
- B(m);N_GUARD::QAB1(F),XB(m)
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).