MESON Chess Problem Database
Problem Display
PID: 147904 (4R3/b2p1N2/3Qqp2/3pNR1n/3pk3/3p3B/3B4/K6b w - - 0 1)
Kovacevic, Marjan
1/2 Prize, Uralski Problemist, 2008
#2
8 + 10
| 23 | Die Schwalbe | 2012 |
| 56 | The Problemist | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qxf7
- 2.Sxf7#
- 1...Qxd6
- 2.Sxd6#
- 1...Sg3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg7
- 2.Rf4#
- 1...fxe5
- 2.Sg5#
- 1...Qxf7
- Tries
- 1.Sf3?
- threat
- 2.Qxd5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe5!
- threat
- 1.Sc4?
- threat
- 2.Qxd5#
- 1...dxc4
- 2.Qd5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe5!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 2.Qxd5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe5
- 2.Sf2#
- 1...Kxf5!
- threat
- 1.Sc6?
- threat
- 2.Qxd5#
- 1...dxc6
- 2.Rxe6#
- 2.Qxe6#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe5!
- threat
- 1.Sg6?
- threat
- 2.Qxd5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe5!
- threat
- 1.Sxd7?
- threat
- 2.Rxe6#
- 2.Qxd5#
- 2.Qxe6#
- 1...Qxe8
- 2.Qxd5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Qe7
- 2.Rxe7#
- 2.Qxe7#
- 2.Qxd5#
- 1...Bb8
- 2.Sc5#
- 2.Rxe6#
- 2.Qxd5#
- 1...Sg7
- 2.Sxf6#
- 2.Rf4#
- 2.Qf4#
- 2.Qxd5#
- 1...Qe5!
- threat
- 1.Bg2+?
- 1...Kxf5
- 2.Sh6#
- 1...Bxg2!
- 1...Kxf5
- 1.Rf1?
- threat
- 2.Re1#
- 1...Qxh3
- 2.Sg4#
- 1...Qxe5
- 2.Bf5#
- 1...fxe5
- 2.Sg5#
- 1...Qg4
- 2.Sxg4#
- 1...Sg3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Bf3!
- threat
- 1.Rxf6?
- threat
- 2.Sg5#
- 1...Qxf7
- 2.Sxf7#
- 2.Bf5#
- 1...Qg4
- 2.Sxg4#
- 1...Qf5
- 2.Bxf5#
- 1...Qxf6!
- threat
- 1.Rxe6?
- threat
- 2.Sxd7#
- 1...fxe5
- 2.Sg5#
- 2.Rexe5#
- 2.Qxe5#
- 1...Sf4
- 2.Rxf4#
- 1...Sg7
- 2.Rf4#
- 1...dxe6!
- threat
- 1.Qa6?
- threat
- 2.Qxd3#
- 1...Qxe5
- 2.Sd6#
- 1...fxe5
- 2.Sg5#
- 1...Sf4
- 2.Rxf4#
- 1...Qxa6+!
- threat
- 1.Qxe6?
- threat
- 2.Sxd7#
- 2.Sd6#
- 1...fxe5
- 2.Sg5#
- 2.Sd6#
- 2.Qxe5#
- 1...dxe6
- 2.Sd6#
- 1...Bc5
- 2.Sxd7#
- 1...Sf4
- 2.Sd6#
- 2.Rxf4#
- 1...Sg7
- 2.Sd6#
- 2.Rf4#
- 1...d6
- 2.Sf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxd6#
- 1...Bb8!
- threat
- 1.Sf3?
- Keys
- 1.Qa3!
- threat
- 2.Qxd3#
- 1...Qxe5
- 2.Sd6#
- 1...fxe5
- 2.Sg5#
- 1...Qa6
- 2.Sc6#
- 1...Sf4
- 2.Rxf4#
- threat
- 1.Qa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(g);XS(G)::R(H)+S(D),XQ(g)
- Q(g);XQ(F)::S(G),XQ(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD,XS(D)::S(G)
- Tries
- Try
- S(D);P_PINQ(g)
- Threat
- QAB1(F),XP(e)
- Refutation
- Q(g);
- Try
- S(D);P_PINQ(g)
- Threat
- QAB1(F),XP(e)
- Vars
- P(e);XS(D)::QAB1(F)
- Refutation
- Q(g);
- Try
- S(D);P_PINQ(g)
- Threat
- DUALS(2)
- Vars
- Q(g);::S(D)
- Refutation
- K(d);N_SPINQ(g),S_FLIGHT,XR(E)
- Try
- S(D);P_PINQ(g)
- Threat
- QAB1(F),XP(e)
- Refutation
- Q(g);
- Try
- S(D);P_PINQ(g)
- Threat
- QAB1(F),XP(e)
- Refutation
- Q(g);
- Try
- S(D);P_PINQ(g),XP(j)
- Threat
- DUALS(3)
- Vars
- Q(g);N_SPINQ(g),XR(H)::QAB1(F),XP(e)
- Refutation
- Q(g);
- Try
- B(C);CHECK
- Vars
- K(d);S_FLIGHT,XR(E)::S(G)
- Refutation
- B(a);XB(C)
- Try
- R(E);
- Threat
- R(E)
- Vars
- Q(g);XB(C)::R(H)+S(D)
- Q(g);N_GUARD,P_SPINQ(g),XS(D)::B(C)
- P(h);N_GUARD,XS(D)::S(G)
- Q(g);::R(H)+S(D),XQ(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- Refutation
- B(a);
- Try
- R(E);XP(h)
- Threat
- S(G)
- Vars
- Q(g);::R(H)+S(D),XQ(g)
- Q(g);N_GUARD::B(C),XQ(g)
- Refutation
- Q(g);XR(E)
- Try
- R(H);XQ(g)
- Threat
- R(H)+S(D),XP(j)
- Vars
- S(f);N_GUARD::R1(E),XS(f)
- S(f);N_GUARD::R1(E)
- Refutation
- P(j);XR(H)
- Try
- Q(F);
- Threat
- QAB1(F),XP(b)
- Vars
- Q(g);N_GUARD,P_SPINQ(g),XS(D)::S(G)
- P(h);N_GUARD,XS(D)::S(G)
- S(f);N_GUARD::R1(E),XS(f)
- Refutation
- Q(g);CHECK,XQ(F)
- Try
- Q(F);XQ(g)
- Threat
- DUALS(2)
- Vars
- P(j);XQ(F)::S(G)
- B(i);::QAR(F)+S(D),XP(j)
- Refutation
- B(i);
- Try
- Actual
- Q(F);
- Threat
- QAB1(F),XP(b)
- Vars
- Q(g);N_GUARD,P_SPINQ(g),XS(D)::S(G)
- P(h);N_GUARD,XS(D)::S(G)
- Q(g);P_PINQ(F)::R(H)+S(D)
- S(f);N_GUARD::R1(E),XS(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).