MESON Chess Problem Database
Problem Display
PID: 261362 (Kn5b/prpr3n/3BQ1b1/3N1p2/3k4/1P6/1P2PPpp/6q1 w - - 0 1)
Petkov, Petko Andonov
Neue Zurcher Zeitung, 1990
#2
8 + 13
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rg7
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Rg7
- Tries
- 1.Sc3?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...Rxb3
- 2.Qd5#
- 1...Rxd6
- 2.Qe3#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Qc1
- 2.Qc4#
- 2.Qd5#
- 1...Rb4
- 2.Qd5#
- 2.Qe3#
- 1...Rb5
- 2.Sxb5#
- 2.Qc4#
- 2.Qe3#
- 1...Re7
- 2.Qc4#
- 2.Qd5#
- 1...Bf7
- 2.Qe3#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Sf6
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 1...c6
- 2.Qc4#
- 2.Qe3#
- 1...Qxf2!
- threat
- 1.Se3?
- threat
- 2.Sc2#
- 2.Qc4#
- 2.Qd5#
- 1...Qxf2
- 2.Sc2#
- 1...cxd6
- 2.Qd5#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qb1
- 2.Qc4#
- 2.Qd5#
- 1...Qc1
- 2.Qd5#
- 1...Qd1
- 2.Qc4#
- 2.Qd5#
- 1...Rb4
- 2.Sc2#
- 2.Qd5#
- 1...Rb5
- 2.Sc2#
- 2.Qc4#
- 1...Bf7
- 2.Sc2#
- 2.Sxf5#
- 1...Sf6
- 2.Sc2#
- 2.Qc4#
- 2.Qe5#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 1...c6
- 2.Sc2#
- 2.Qc4#
- 1...Rxd6!
- threat
- 1.Sb4?
- threat
- 2.Sc2#
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 2.e3#
- 1...Qxf2
- 2.Sc2#
- 1...Rxd6
- 2.Qe3#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qb1
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 2.e3#
- 1...Qc1
- 2.Qd5#
- 1...Qd1
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 2.e3#
- 1...Qe1
- 2.Sc2#
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...Rb5
- 2.Sc2#
- 2.Qc4#
- 2.Qe3#
- 2.e3#
- 1...Re7
- 2.Sc2#
- 2.Qc4#
- 2.Qd5#
- 2.e3#
- 1...Bf7
- 2.Sc2#
- 2.Qe3#
- 2.e3#
- 1...Sf6
- 2.Sc2#
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- 2.e3#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 1...c6
- 2.Sc2#
- 2.Qc4#
- 2.Qe3#
- 2.e3#
- 1...Rxb4!
- threat
- 1.Sf4?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 2.e3#
- 1...Rxb3
- 2.Qd5#
- 1...Rxd6
- 2.Qe3#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qc1
- 2.Qd5#
- 1...Qe1
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...Rb4
- 2.Qd5#
- 2.Qe3#
- 2.e3#
- 1...Rb5
- 2.Qc4#
- 2.Qe3#
- 2.e3#
- 1...Re7
- 2.Qc4#
- 2.Qd5#
- 2.e3#
- 1...Bf7
- 2.Qe3#
- 2.e3#
- 1...Sf6
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- 2.e3#
- 1...c6
- 2.Qc4#
- 2.Qe3#
- 2.e3#
- 1...Qxf2!
- threat
- 1.Sb6?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...Rxb6
- 2.Qc4#
- 1...Rxd6
- 2.Qe3#
- 1...axb6
- 2.Qc4#
- 1...cxb6
- 2.Qc4#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qc1
- 2.Qd5#
- 1...Re7
- 2.Qc4#
- 2.Qd5#
- 1...Bf7
- 2.Qe3#
- 1...Sf6
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 1...c6
- 2.Qc4#
- 2.Qe3#
- 1...Qxf2!
- threat
- 1.Se7?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...Rxb3
- 2.Qd5#
- 1...Rxd6
- 2.Qe3#
- 1...Rxe7
- 2.Qc4#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Be5
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qc1
- 2.Qd5#
- 1...Rb4
- 2.Qd5#
- 2.Qe3#
- 1...Rb5
- 2.Qc4#
- 2.Qe3#
- 1...Bf7
- 2.Sxf5#
- 2.Qe3#
- 1...Sf6
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 1...c6
- 2.Qc4#
- 2.Qe3#
- 1...Qxf2!
- threat
- 1.Sc3?
- Keys
- 1.Sf6!
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 2.Qe5#
- 1...Qxf2
- 2.Qe5#
- 1...Rxb3
- 2.Qd5#
- 1...Rxd6
- 2.Qe3#
- 1...Bxf6
- 2.Qc4#
- 1...Sxf6
- 2.Qc4#
- 2.Qe5#
- 1...cxd6
- 2.Qd5#
- 2.Qe3#
- 1...Qc1
- 2.Qd5#
- 2.Qe5#
- 1...Rb4
- 2.Qd5#
- 2.Qe3#
- 2.Qe5#
- 1...Rb5
- 2.Qc4#
- 2.Qe3#
- 1...Re7
- 2.Qc4#
- 2.Qd5#
- 1...Bf7
- 2.Qe3#
- 2.Qe5#
- 1...Sc6
- 2.Qc4#
- 2.Qd5#
- 2.Qe3#
- 1...f4
- 2.Qc4#
- 2.Qd5#
- 2.Qe5#
- 1...c6
- 2.Qc4#
- 2.Qe3#
- 2.Qe5#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(j);S_CUTB(m)::QAB1(G)
- B(m);N_GUARD::QAB1(G),XB(m)
- S(k);S_CUTB(m)::QAB1(G)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(h);XP(D)::QAR1(G)
- R(j);XB(F)::QAB1(G)
- B(f);::QAB1(G)
- Refutation
- Q(a);XP(C)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(a);XP(C)::S(E)
- P(i);XB(F)::QAR1(G)
- Q(a);::QAR1(G)
- Refutation
- R(j);XB(F)
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- Q(a);XP(C)::S(E)
- R(j);XB(F)::QAB1(G)
- Q(a);::QAR1(G)
- Refutation
- R(h);XS(E)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- R(h);XP(D)::QAR1(G)
- R(j);XB(F)::QAB1(G)
- Q(a);::QAR1(G)
- Refutation
- Q(a);XP(C)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(h);XS(E)::QAR1(G)
- R(j);XB(F)::QAB1(G)
- P(g);XS(E)::QAR1(G)
- P(i);XS(E)::QAR1(G)
- Q(a);::QAR1(G)
- B(f);::QAB1(G)
- Refutation
- Q(a);XP(C)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(h);XP(D)::QAR1(G)
- R(j);XB(F)::QAB1(G)
- R(j);XS(E)::QAR1(G)
- Q(a);::QAR1(G)
- Refutation
- Q(a);XP(C)
- Try
- Actual
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(a);XP(C)::QAB1(G)
- R(h);XP(D)::QAR1(G)
- R(j);XB(F)::QAB1(G)
- B(m);XS(E)::QAR1(G)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).