MESON Chess Problem Database
Problem Display
PID: 137046 (5q2/6r1/2p1B1Nn/n1BN4/4k1p1/1r3R2/pP3p2/K2Q1b2 w - - 0 1)
Kovacevic, Marjan
2nd Prize, Shakhmatnaya kompozitsiya, 2008
#2
8 + 11
| 56 | The Problemist | 2010 |
| 23 | Die Schwalbe | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5
- 2.Sf6#
- 2.Rf4#
- 1...Qd6
- 2.Sf6#
- 1...Qe7
- 2.Rf4#
- 1...Qxf3
- 2.Qd4#
- 1...Qf4
- 2.Rxf4#
- 1...Qf6
- 2.Sxf6#
- 1...Qa8
- 2.Sf6#
- 2.Rf4#
- 1...Qb8
- 2.Sf6#
- 1...Qc8
- 2.Sf6#
- 2.Rf4#
- 1...Qd8
- 2.Rf4#
- 1...Qe8
- 2.Sf6#
- 2.Rf4#
- 1...Qg8
- 2.Sf6#
- 2.Rf4#
- 1...Qh8
- 2.Sf6#
- 2.Rf4#
- 1...Rxb2
- 2.Sc3#
- 2.Re3#
- 1...Rc3
- 2.Sxc3#
- 1...Re3
- 2.Rxe3#
- 1...Rxf3
- 2.Qd4#
- 1...Rb4
- 2.Sc3#
- 2.Re3#
- 1...Rb5
- 2.Sc3#
- 2.Re3#
- 1...Rb6
- 2.Sc3#
- 2.Re3#
- 1...Rbb7
- 2.Sc3#
- 2.Re3#
- 1...Rb8
- 2.Sc3#
- 2.Re3#
- 1...Bd3
- 2.Re3#
- 1...Sf5
- 2.Rf4#
- 1...Sf7
- 2.Sf6#
- 2.Bf5#
- 2.Rf4#
- 1...gxf3
- 2.Qd4#
- 1...cxd5
- 2.Bxd5#
- 2.Qxd5#
- 1...Qxc5
- Tries
- 1.Bf5+?
- 1...Sxf5
- 2.Rf4#
- 1...Qxf5!
- 1...Sxf5
- 1.Rxb3?
- threat
- 2.Sc3#
- 2.Re3#
- 2.Qd4#
- 1...Qxc5
- 2.Sf6#
- 1...Rxg6
- 2.Re3#
- 2.Qd4#
- 1...cxd5
- 2.Re3#
- 2.Qd4#
- 2.Qxd5#
- 1...Qf3
- 2.Qd4#
- 1...Qf4
- 2.Sc3#
- 2.Qd4#
- 1...Qf6
- 2.Sxf6#
- 2.Re3#
- 1...Be2
- 2.Re3#
- 2.Qxe2#
- 2.Qd4#
- 1...Bd3
- 2.Sc3#
- 2.Qxd3#
- 1...Sc4
- 2.Sc3#
- 2.Qd4#
- 1...Sf5
- 2.Sc3#
- 2.Qxg4#
- 1...Sxb3+!
- threat
- 1.Rf6?
- threat
- 2.Qd4#
- 1...Qxc5
- 2.Rf4#
- 1...Qxf6
- 2.Sxf6#
- 1...Rb4
- 2.Sc3#
- 1...Bd3
- 2.Qh1#
- 1...Sf5
- 2.Bxf5#
- 1...Rd3!
- threat
- 1.Rxf8?
- threat
- 2.Sf6#
- 2.Rf4#
- 2.Qd4#
- 1...Rxg6
- 2.Qd4#
- 1...cxd5
- 2.Bxd5#
- 2.Rf4#
- 2.Qd4#
- 2.Qxd5#
- 1...Rd3
- 2.Sf6#
- 2.Rf4#
- 1...Rf3
- 2.Qd4#
- 1...Rb4
- 2.Sc3#
- 2.Sf6#
- 2.Rf4#
- 1...Be2
- 2.Rf4#
- 2.Qd4#
- 1...Bd3
- 2.Sf6#
- 2.Rf4#
- 2.Qh1#
- 1...Sf5
- 2.Sf6#
- 2.Bxf5#
- 1...Sf7
- 2.Sf6#
- 1...Sg8
- 2.Bf5#
- 2.Rf4#
- 2.Qd4#
- 1...Rf7!
- threat
- 1.Qc2+?
- 1...Rd3
- 2.Re3#
- 1...Bd3
- 2.Re3#
- 1...Kxf3!
- 1...Rd3
- 1.Qe2+?
- 1...Re3
- 2.Sc3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Bxe2!
- 1...Re3
- 1.Qd3+?
- 1...Bxd3
- 2.Re3#
- 1...Rxd3!
- 1...Bxd3
- 1.Bf5+?
- Keys
- 1.Rc3!
- threat
- 2.Qd4#
- 1...Qxc5
- 2.Sf6#
- 1...Rxc3
- 2.Sxc3#
- 1...Qf6
- 2.Sxf6#
- 1...Rb4
- 2.Re3#
- 1...Bd3
- 2.Qxd3#
- 1...Sf5
- 2.Qxg4#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(k);N_GUARD::S(F)
- Q(k);N_GUARD::R1(D)
- Q(k);SBLOCK,XR(D)::QAR1(B)
- Q(k);N_GUARD::R1(D),XQ(k)
- Q(k);N_GUARD,P_PINP(C)::S(F),XQ(k)
- R(d);N_GUARD::S(F),XR(d)
- R(d);N_GUARD::R1(D),XR(d)
- R(d);SBLOCK,XR(D)::QAR1(B)
- B(a);S_CUTR(d)::R1(D)
- S(i);S_CUTQ(k)::R1(D)
- P(f);SBLOCK,XR(D)::QAR1(B)
- Tries
- Try
- B(G);CHECK
- Vars
- S(i);XB(G)::R1(D)
- Refutation
- Q(k);XB(G)
- Try
- R(D);XR(d)
- Threat
- DUALS(3)
- Vars
- Q(k);N_GUARD,XB(E)::S(F)
- Q(k);::QAR1(B)
- Refutation
- S(g);CHECK,XR(D)
- Try
- R(D);
- Threat
- QAR1(B)
- Vars
- Q(k);N_GUARD,XB(E)::R1(D)
- Q(k);P_PINP(C),XR(D)::S(F),XQ(k)
- R(d);N_GUARD::S(F)
- B(a);OGATE,SBLOCK::QAB(B)
- S(i);N_GUARD::B(G),XS(i)
- Refutation
- R(d);
- Try
- R(D);XQ(k)
- Threat
- DUALS(3)
- Vars
- R(j);XS(H)::QAR1(B)
- R(d);::QAR1(B)
- S(i);::S(F)
- Refutation
- R(j);
- Try
- Q(B);CHECK
- Vars
- R(d);P_SPINR(d)::R1(D)
- B(a);P_SPINB(a)::R1(D)
- Refutation
- K(e);S_FLIGHT,XR(D)
- Try
- Q(B);CHECK
- Refutation
- B(a);XQ(B)
- Try
- Q(B);CHECK
- Vars
- B(a);XQ(B)::R1(D)
- Refutation
- R(d);XQ(B)
- Try
- Actual
- R(D);
- Threat
- QAR1(B)
- Vars
- Q(k);N_GUARD,XB(E)::S(F)
- R(d);XR(D)::S(F),XR(d)
- Q(k);N_GUARD::S(F),XQ(k)
- R(d);N_GUARD::R1(D)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(i);N_GUARD,S_CUTQ(k)::QAR2(B),XP(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).