MESON Chess Problem Database
Problem Display
PID: 98497 (4Brb1/2R4R/3N2Q1/5rp1/4pP2/1N1pkp2/7B/5K2 w - - 0 1)
Petkov, Petko Andonov
Problemas, 1967
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Qxe4#
- 1...Rb5
- 2.Qxe4#
- 1...Rc5
- 2.Qxe4#
- 1...Rd5
- 2.Sc4#
- 2.Qxe4#
- 1...R5f6
- 2.Qxe4#
- 1...R5f7
- 2.Sc4#
- 2.Qxe4#
- 1...R8f7
- 2.Sc4#
- 1...Rxe8
- 2.Sxf5#
- 1...Bc4
- 2.Sxc4#
- 1...Bf7
- 2.Sxf5#
- 1...Bxh7
- 2.Sc4#
- 1...d2
- 2.Rc3#
- 1...f2
- 2.Rh3#
- 1...Ra5
- Tries
- 1.Rc1?
- threat
- 2.Re1#
- 1...d2
- 2.Rc3#
- 1...f2
- 2.Rh3#
- 1...Bxb3!
- threat
- 1.Rcf7?
- threat
- 2.Sc4#
- 2.Sxf5#
- 1...Rxf4
- 2.Sc4#
- 1...R5xf7
- 2.Sc4#
- 2.Qxe4#
- 1...R8xf7
- 2.Sc4#
- 1...Bxf7
- 2.Sxf5#
- 1...f2
- 2.Rh3#
- 1...Ra5
- 2.Sc4#
- 2.Qxe4#
- 1...Rb5
- 2.Sc4#
- 2.Qxe4#
- 1...Rc5
- 2.Qxe4#
- 1...Rd5
- 2.Sc4#
- 2.Qxe4#
- 1...Re5
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 2.Qxe4#
- 1...d2!
- threat
- 1.Rhf7?
- threat
- 2.Sc4#
- 2.Sxf5#
- 1...Rxf4
- 2.Sc4#
- 1...R5xf7
- 2.Sc4#
- 2.Qxe4#
- 1...R8xf7
- 2.Sc4#
- 1...Bxf7
- 2.Sxf5#
- 1...d2
- 2.Rc3#
- 1...Re5
- 2.Sc4#
- 1...Ra5
- 2.Sc4#
- 2.Qxe4#
- 1...Rb5
- 2.Sc4#
- 2.Qxe4#
- 1...Rc5
- 2.Qxe4#
- 1...Rd5
- 2.Sc4#
- 2.Qxe4#
- 1...Rf6
- 2.Sc4#
- 2.Qxe4#
- 1...f2!
- threat
- 1.Qf7?
- threat
- 2.Sc4#
- 2.Sxf5#
- 1...Rxf4
- 2.Sc4#
- 1...R5xf7
- 2.Sc4#
- 1...R8xf7
- 2.Sc4#
- 1...Bxf7
- 2.Sxf5#
- 1...Bxh7
- 2.Sc4#
- 1...d2
- 2.Rc3#
- 1...f2
- 2.Rh3#
- 1...Re5
- 2.Sc4#
- 1...Ra5
- 2.Sc4#
- 1...Rb5
- 2.Sc4#
- 1...Rd5
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rc5!
- threat
- 1.Qe6?
- threat
- 2.Sc4#
- 2.Qxe4#
- 1...Rxf4
- 2.Sc4#
- 1...Rxe8
- 2.Sc4#
- 2.Sxf5#
- 1...d2
- 2.Rc3#
- 2.Qxe4#
- 1...f2
- 2.Rh3#
- 2.Qxe4#
- 1...Re5
- 2.Sc4#
- 1...Rc5
- 2.Qxe4#
- 1...Bxe6!
- threat
- 1.Qxg8?
- threat
- 2.Sc4#
- 1...d2
- 2.Rc3#
- 1...f2
- 2.Rh3#
- 1...Rc5!
- threat
- 1.Rc1?
- Keys
- 1.Bf7!
- threat
- 2.Sc4#
- 2.Sxf5#
- 1...Rxf4
- 2.Sc4#
- 1...R5xf7
- 2.Sc4#
- 2.Qxe4#
- 1...R8xf7
- 2.Sc4#
- 1...Bxf7
- 2.Sxf5#
- 1...d2
- 2.Rc3#
- 1...f2
- 2.Rh3#
- 1...Ra5
- 2.Sc4#
- 2.Qxe4#
- 1...Rb5
- 2.Sc4#
- 2.Qxe4#
- 1...Rc5
- 2.Qxe4#
- 1...Rd5
- 2.Sc4#
- 2.Qxe4#
- 1...Re5
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 2.Qxe4#
- threat
- 1.Bf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(e);OGATE::QAR1(F),XP(d)
- R(g);S_CUTB(h)::S(E)
- R(g);N_GUARD,XB(I)::S(E),XR(e)
- B(h);N_GUARD::S(E),XB(h)
- B(h);S_CUTR(g)::S(E),XR(e)
- B(h);N_GUARD,XR(H)::S(E)
- P(a);OGATEB::R(G)
- P(c);OGATEB::R(H)
- Tries
- Try
- R(G);
- Threat
- R(G)
- Vars
- P(a);OGATEB::R(G)
- P(c);OGATEB::R(H)
- Refutation
- B(h);XS(C)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::S(E)
- R(g);XR(G)::S(E)
- B(h);XR(G)::S(E),XR(e)
- P(c);OGATEB::R(H)
- R(e);OGATE::QAR1(F),XP(d)
- R(e);::S(E)
- Refutation
- P(a);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::S(E)
- R(g);XR(H)::S(E)
- B(h);XR(H)::S(E),XR(e)
- P(a);OGATEB::R(G)
- R(e);::S(E)
- R(e);OGATE::QAR1(F),XP(d)
- Refutation
- P(c);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::S(E)
- R(e);XQ(F)::S(E)
- R(g);XQ(F)::S(E)
- B(h);XQ(F)::S(E),XR(e)
- B(h);XR(H)::S(E)
- P(a);OGATEB::R(G)
- P(c);OGATEB::R(H)
- R(e);::S(E)
- Refutation
- R(e);
- Try
- Q(F);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::S(E)
- R(e);N_SPINP(d)::S(E)
- R(e);::QAR1(F),XP(d)
- Refutation
- B(h);N_SPINP(d),XQ(F)
- Try
- Q(F);XB(h)
- Threat
- S(E)
- Vars
- P(a);OGATEB::R(G)
- P(c);OGATEB::R(H)
- Refutation
- R(e);
- Try
- Actual
- B(I);
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::S(E)
- R(g);XB(I)::S(E)
- B(h);XB(I)::S(E),XR(e)
- P(a);OGATEB::R(G)
- P(c);OGATEB::R(H)
- R(e);OGATE::QAR1(F),XP(d)
- R(e);::S(E)
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