MESON Chess Problem Database
Problem Display
PID: 257622 (5R1B/8/n3P3/2p3q1/R2P2p1/3NkpQ1/2BNPpp1/3Kn1b1 w - - 0 1)
Kovacevic, Marjan
Troll, 2021
(First published on Wed Nov 24 2021)
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Qxf4#
- 1...Qh4
- 2.Qf4#
- 2.Qe5#
- 1...Qh6
- 2.Qe5#
- 1...Qe7
- 2.Qf4#
- 2.Qe5#
- 1...Qd8
- 2.Qf4#
- 2.Qe5#
- 1...Qd5
- 2.Qf4#
- 1...Qe5
- 2.Qxe5#
- 1...Qh5
- 2.Qf4#
- 1...Qg6
- 2.Qf4#
- 1...Qg7
- 2.Qf4#
- 1...Qg8
- 2.Qf4#
- 2.Qe5#
- 1...Bh2
- 2.Qxf2#
- 1...cxd4
- 2.Bxd4#
- 1...Qf4
- Tries
- 1.Sb2?
- threat
- 2.Sbc4#
- 2.Sdc4#
- 1...Sxc2
- 2.Sbc4#
- 1...Qd5
- 2.Qf4#
- 1...Qe5
- 2.Qxe5#
- 1...Qg7
- 2.Qf4#
- 1...Sd3
- 2.Sbc4#
- 1...c4
- 2.Sbxc4#
- 2.Sdxc4#
- 1...Qf6!
- threat
- 1.Sxf2?
- threat
- 2.Sc4#
- 1...Qf6
- 2.Sxg4#
- 1...Qd5
- 2.Sxg4#
- 1...Qe5
- 2.Sxg4#
- 1...c4
- 2.Sxc4#
- 1...Qg7!
- threat
- 1.Sb4?
- threat
- 2.Sc4#
- 1...Sxc2
- 2.Sxc2#
- 1...Qf6
- 2.Sd5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg7
- 2.Sd5#
- 2.Qf4#
- 1...Qd5
- 2.Sxd5#
- 2.Qf4#
- 1...c4
- 2.Sxc4#
- 1...Sd3!
- threat
- 1.Sf4?
- threat
- 2.Sc4#
- 1...Sxc2
- 2.Sxg2#
- 1...Qf6
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Qg7
- 2.Sd5#
- 1...Sd3
- 2.Sxg2#
- 1...c4
- 2.Sxc4#
- 1...Qe5!
- threat
- 1.Sxc5?
- threat
- 2.Sc4#
- 1...Qxc5
- 2.Qf4#
- 1...Qd5
- 2.Qf4#
- 1...Qe5
- 2.Qxe5#
- 1...Qg7
- 2.Qf4#
- 1...Qf6!
- threat
- 1.Rxf3+?
- 1...gxf3
- 2.Qxg5#
- 1...Sxf3!
- 1...gxf3
- 1.Rf4?
- threat
- 2.Sc4#
- 2.Re4#
- 1...Qxf4
- 2.Qxf4#
- 1...Qe5
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qg6
- 2.Sc4#
- 1...c4
- 2.Sxc4#
- 2.Re4#
- 1...Qd5!
- threat
- 1.Qxg4?
- threat
- 2.Sc4#
- 2.Qe4#
- 2.Qxg5#
- 1...fxe2+
- 2.Qxe2#
- 1...Sxd3
- 2.Sc4#
- 2.Rxf3#
- 2.Qxf3#
- 2.Qe4#
- 1...Qf6
- 2.Sc4#
- 2.Qe4#
- 1...Qf4
- 2.Qxf4#
- 1...Qh4
- 2.Sc4#
- 1...Qh6
- 2.Sc4#
- 2.Qe4#
- 1...Qe7
- 2.Sc4#
- 2.Qe4#
- 2.Qf4#
- 1...Qd8
- 2.Sc4#
- 2.Qe4#
- 2.Qf4#
- 1...Qd5
- 2.Qf4#
- 1...Qe5
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qh5
- 2.Sc4#
- 2.Qe4#
- 2.Qf4#
- 1...Qg6
- 2.Sc4#
- 2.Qf4#
- 1...Qg7
- 2.Sc4#
- 2.Qe4#
- 2.Qf4#
- 1...Qg8
- 2.Sc4#
- 2.Qe4#
- 2.Qf4#
- 1...Bh2
- 2.Sc4#
- 2.Qe4#
- 1...c4
- 2.Sxc4#
- 2.Qe4#
- 2.Qxg5#
- 1...Qxg4!
- threat
- 1.dxc5?
- threat
- 2.Bd4#
- 2.Re4#
- 1...Qxc5
- 2.Re4#
- 2.Qf4#
- 1...Sxc2
- 2.Re4#
- 1...Sxc5
- 2.Bd4#
- 1...Qf6
- 2.Re4#
- 1...Qf4
- 2.Qxf4#
- 1...Qd8
- 2.Re4#
- 2.Qf4#
- 2.Qe5#
- 1...Qd5
- 2.Qf4#
- 1...Qe5
- 2.Qxe5#
- 1...Qf5
- 2.Bd4#
- 1...Qg6
- 2.Bd4#
- 2.Qf4#
- 1...Qg7
- 2.Re4#
- 2.Qf4#
- 1...Sb4!
- threat
- 1.Sb2?
- Keys
- 1.Se5!
- threat
- 2.Sec4#
- 1...Qxe5
- 2.Qxe5#
- 1...c4
- 2.Sexc4#
- 1...Qf6
- 2.Sxg4#
- 1...Qg7
- 2.Qf4#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(i);N_GUARD::QAB1(F),XQ(i)
- Q(i);N_GUARD::QAR2(F)
- Q(i);N_GUARD::QAB1(F)
- Q(i);N_GUARD::QAR2(F),XQ(i)
- B(b);N_GUARD::QAB1(F),XP(c)
- P(h);OGATE,XP(H)::B(K),XP(h)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(a);XB(B)::S(E)
- Q(i);N_GUARD::QAB1(F)
- Q(i);N_GUARD::QAR2(F),XQ(i)
- S(a);::S(E)
- Refutation
- Q(i);
- Try
- S(E);XP(c)
- Threat
- S(C)
- Vars
- Q(i);N_GUARD::S(E),XP(g)
- P(h);::S(C),XP(h)
- Refutation
- Q(i);
- Try
- S(E);
- Threat
- S(C)
- Vars
- S(a);XB(B)::S(E),XS(a)
- Q(i);N_GUARD::S(E)
- Q(i);N_GUARD::QAR2(F),XQ(i)
- P(h);::S(C),XP(h)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- S(C)
- Vars
- S(a);N_GUARD,XB(B)::S(E),XP(d)
- Q(i);N_GUARD::S(E)
- Q(i);N_GUARD::S(E),XQ(i)
- S(a);N_GUARD::S(E),XP(d)
- P(h);::S(C),XP(h)
- Refutation
- Q(i);
- Try
- S(E);XP(h)
- Threat
- S(C)
- Vars
- Q(i);N_GUARD,XS(E)::QAB1(F)
- Q(i);N_GUARD::QAB1(F)
- Q(i);N_GUARD::QAR2(F),XQ(i)
- Refutation
- Q(i);
- Try
- R(J);CHECK,XP(f)
- Vars
- P(g);OGATE,P_SPINP(g),XR(J)::QAB(F),XQ(i)
- Refutation
- S(a);P_SPINS(a),XR(J)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,XR(J)::QAB1(F),XQ(i)
- Q(i);::S(C)
- Refutation
- Q(i);
- Try
- Q(F);N_PINP(f),XP(g)
- Threat
- DUALS(3)
- Vars
- P(f);CHECK,OGATE,XP(D)::QAR1(F),XP(f)
- Q(i);N_GUARD::QAB1(F),XQ(i)
- Q(i);::S(C)
- Q(i);N_GUARD::QAB1(F)
- Refutation
- Q(i);XQ(F)
- Try
- P(H);XP(h)
- Threat
- DUALS(2)
- Vars
- S(a);XB(B)::R1(G)
- S(j);XP(H)::B(K)
- Q(i);::R1(G)
- Q(i);N_GUARD::QAB1(F),XQ(i)
- Q(i);N_GUARD::QAB1(F)
- Q(i);N_GUARD::QAR2(F),XQ(i)
- Q(i);::B(K)
- Refutation
- S(j);
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- Q(i);OGATE,XS(E)::QAR2(F),XQ(i)
- P(h);::S(E),XP(h)
- Q(i);N_GUARD::S(E),XP(g)
- Q(i);N_GUARD::QAB1(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).