MESON Chess Problem Database
Problem Display
PID: 7134 (8/4p3/3P2R1/2p2k1P/4N2P/KB2qp1P/1NQ3nB/1b2R3 w - - 0 1)
Kovacevic, Marjan
1st Prize, Pat a Mat, 1998-1999
#2
12 + 7
| 3335 | Cyclone | 2000 |
| 145 | StrateGems | 2003 |
| 145 | StrateGems | 2003/1 |
| 23 | Die Schwalbe | 2007 |
| 56 | The Problemist | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Be6#
- 1...Qg1
- 2.Be6#
- 2.Rg5#
- 1...Qd2
- 2.Be6#
- 1...Qf2
- 2.Be6#
- 2.Rg5#
- 1...Qd4
- 2.Be6#
- 2.Rg5#
- 1...Qf4
- 2.Sg3#
- 1...Qg5
- 2.Be6#
- 2.Rxg5#
- 1...Qh6
- 2.Be6#
- 1...Qxe1
- 2.Be6#
- 2.Rg5#
- 1...Qe2
- 2.Be6#
- 2.Rg5#
- 1...Qc3
- 2.Rg5#
- 1...Qd3
- 2.Rg5#
- 1...Qxe4
- 2.Be6#
- 1...Sf4
- 2.Rg5#
- 1...exd6
- 2.Sxd6#
- 2.Rf6#
- 1...e5
- 2.Rf6#
- 1...e6
- 2.Rf6#
- 1...Qc1
- Tries
- 1.Sd2+?
- 1...Qd3
- 2.Re5#
- 1...Qe4
- 2.Be6#
- 1...Bxc2!
- 1...Qd3
- 1.Sf2+?
- 1...Qd3
- 2.Re5#
- 1...Qe4
- 2.Be6#
- 1...Bxc2!
- 1...Qd3
- 1.Sc3+?
- 1...Qd3
- 2.Be6#
- 2.Re5#
- 1...Qe4
- 2.Be6#
- 1...Bxc2!
- 1...Qd3
- 1.Sg3+?
- 1...Kf4
- 2.Sf1#
- 2.Sh1#
- 2.Se2#
- 2.Sf5#
- 1...Ke5!
- 1...Kf4
- 1.Sxc5+?
- 1...Qd3
- 2.Re5#
- 1...Qe4
- 2.Be6#
- 1...Bxc2!
- 1...Qd3
- 1.Sg5+?
- 1...Qd3
- 2.Re5#
- 1...Qe4
- 2.Be6#
- 1...Bxc2!
- 1...Qd3
- 1.Rxe3?
- threat
- 2.Be6#
- 2.Rg5#
- 1...Sf4
- 2.Sg3#
- 2.Rg5#
- 1...Ba2
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sxc5#
- 2.Sg5#
- 2.Sf6#
- 2.Rg5#
- 1...e6
- 2.Bxe6#
- 2.Rg5#
- 2.Rf6#
- 1...c4!
- threat
- 1.Qc4?
- threat
- 2.Qe6#
- 1...Qxe4
- 2.Qf7#
- 1...Sf4
- 2.Rg5#
- 1...e5
- 2.Sg3#
- 2.Rf6#
- 1...e6
- 2.Rf6#
- 2.Qxe6#
- 1...Qxb3+!
- threat
- 1.Qxc5+?
- 1...Kxe4
- 2.Re6#
- 2.Qd5#
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Qxc5+!
- 1...Kxe4
- 1.dxe7?
- threat
- 2.Sd6#
- 2.Rf6#
- 1...Qxe4
- 2.Be6#
- 1...Bxc2
- 2.Sd6#
- 1...Qf4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Rg5#
- 1...Qd4
- 2.Sd6#
- 2.Be6#
- 2.Rg5#
- 1...Qg5
- 2.Sd6#
- 2.Be6#
- 2.Rxg5#
- 2.Qxc5#
- 1...Qh6
- 2.Sd6#
- 2.Be6#
- 2.Qxc5#
- 1...Qc3
- 2.Sd6#
- 2.Rg5#
- 1...Qxb3+!
- threat
- 1.Sd2+?
- Keys
- 1.Qc3!
- threat
- 2.Qe5#
- 1...Kxe4
- 2.Qe5#
- 1...Qxc3
- 2.Rg5#
- 1...Qxe4
- 2.Rg5#
- 1...exd6
- 2.Sxd6#
- 1...Qd4
- 2.Be6#
- 2.Rg5#
- 1...Qf4
- 2.Be6#
- 1...Sf4
- 2.Sg3#
- 1...e5
- 2.Qxe5#
- threat
- 1.Qc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(c);N_PINB(F),P_PINS(B)::B(F)
- Q(c);N_PINB(F)::B(F)
- Q(c);N_PINB(F),SBLOCK::QAB(C)+S(H),DCHECK
- Q(c);N_GUARD::R1(L)
- Q(c);N_PINB(F),P_SPINQ(c),XS(H)::B(F)
- S(b);S_CUTQ(c)::R1(L)
- P(g);N_GUARD::R1(L)
- Tries
- Try
- S(H);CHECK
- Vars
- Q(c);OGATE,P_SPINQ(c)::R1(A)
- Q(c);N_PINB(F),P_SPINQ(c)::B(F)
- Refutation
- B(a);XQ(C)
- Try
- S(H);CHECK
- Vars
- Q(c);OGATE,P_SPINQ(c)::R1(A)
- Q(c);N_PINB(F),P_SPINQ(c)::B(F)
- Refutation
- B(a);XQ(C)
- Try
- S(H);CHECK,N_SPINB(F)
- Vars
- Q(c);P_SPINQ(c)::B(F)
- Refutation
- B(a);XQ(C)
- Try
- S(H);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINQ(c)
- Try
- S(H);CHECK,XP(e)
- Vars
- Q(c);OGATE,P_SPINQ(c)::R1(A)
- Q(c);N_PINB(F),P_SPINQ(c)::B(F)
- Refutation
- B(a);XQ(C)
- Try
- S(H);CHECK
- Vars
- Q(c);OGATE,P_SPINQ(c)::R1(A)
- Q(c);N_PINB(F),P_SPINQ(c)::B(F)
- Refutation
- B(a);XQ(C)
- Try
- R(A);N_SPINB(F),XQ(c)
- Threat
- DUALS(2)
- Refutation
- P(e);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(c);N_PINB(F),XS(H)::QAR2(C)
- S(b);S_CUTQ(c)::R1(L)
- Refutation
- Q(c);CHECK,XB(F)
- Try
- Q(C);CHECK,XP(e)
- Vars
- P(g);P_SPINP(g)::QAR1(C),XP(g)
- Refutation
- Q(c);CHECK,N_PINB(F),XQ(C)
- Try
- P(K);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(c);N_PINB(F),P_SPINQ(c),XS(H)::B(F)
- B(a);XQ(C)::S(H)
- S(b);S_CUTQ(c)::R1(L)
- Refutation
- Q(c);CHECK,XB(F)
- Try
- Actual
- Q(C);N_SPINB(F)
- Threat
- QAR1(C)
- Vars
- K(f);P_SPINQ(c),S_FLIGHT,XS(H)::QAR1(C)
- Q(c);N_GUARD,P_PINB(F),XQ(C)::R1(L)
- Q(c);N_GUARD,XS(H)::R1(L)
- P(g);XP(K)::S(H),XP(g)
- Q(c);::B(F)
- S(b);SBLOCK::S(H)
- P(g);::QAR1(C),XP(g)
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).