MESON Chess Problem Database
Problem Display
PID: 261405 (5n2/P2p1K2/8/1QNkPp2/2pPR1P1/5R2/r7/br5B w - - 0 1)
Lobusov, Andrey Jakovlevic
Neue Zurcher Zeitung, 1998
#2
10 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qb7#
- 1...Rd1
- 2.Qb7#
- 1...Re1
- 2.Qb7#
- 1...Rf1
- 2.Qb7#
- 1...Rg1
- 2.Qb7#
- 1...Rxh1
- 2.Qb7#
- 1...Rb2
- 2.a8Q#
- 2.a8B#
- 1...Rc2
- 2.a8Q#
- 2.a8B#
- 1...Rd2
- 2.a8Q#
- 2.a8B#
- 1...Re2
- 2.a8Q#
- 2.a8B#
- 1...Rf2
- 2.a8Q#
- 2.a8B#
- 1...Rg2
- 2.a8Q#
- 2.a8B#
- 1...Rh2
- 2.a8Q#
- 2.a8B#
- 1...Bb2
- 2.Qb7#
- 1...Se6
- 2.Qxd7#
- 1...Sg6
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...fxe4
- 2.Sb3#
- 1...Rc1
- Tries
- 1.Rf2?
- threat
- 2.Sb3#
- 1...Rxh1
- 2.Qb7#
- 1...Rxb5
- 2.Ref4#
- 1...Bxd4
- 2.Re1#
- 1...Rb3
- 2.Sxb3#
- 1...Rb4
- 2.Ref4#
- 1...Se6
- 2.Qxd7#
- 1...Ra5!
- threat
- 1.Ra3?
- threat
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rxh1
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Rxa3
- 2.Sb3#
- 1...Bxd4
- 2.a8Q#
- 2.a8B#
- 1...fxe4
- 2.Sb3#
- 1...fxg4
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rc1
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Rd1
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Re1
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Rf1
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Rg1
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Rbb2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rb3
- 2.Sxb3#
- 2.a8Q#
- 2.a8B#
- 1...Rb4
- 2.a8Q#
- 2.a8B#
- 1...Rab2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rc2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rd2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Re2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rf2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rg2
- 2.a8Q#
- 2.a8B#
- 1...Rh2
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Bb2
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Bc3
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Se6
- 2.Qxd7#
- 2.a8Q#
- 2.a8B#
- 1...Sg6
- 2.Sb3#
- 2.Qxd7#
- 2.a8Q#
- 2.a8B#
- 1...Sh7
- 2.Sb3#
- 2.Qxd7#
- 2.a8Q#
- 2.a8B#
- 1...c3
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...f4
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...d6
- 2.Sb3#
- 2.a8Q#
- 2.a8B#
- 1...Rxb5!
- threat
- 1.Rb3?
- threat
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 1...Rxh1
- 2.Qb7#
- 1...Rxb3
- 2.Sxb3#
- 1...Rxa7
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...cxb3
- 2.Sxb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...fxe4
- 2.Se6#
- 1...Rg2
- 2.Qb7#
- 2.a8Q#
- 2.a8B#
- 1...Ra4
- 2.Sd3#
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 2.Qb7#
- 1...Ra5
- 2.Qb7#
- 1...Ra6
- 2.Sd3#
- 2.Sa4#
- 2.Sxa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...Se6
- 2.Sxe6#
- 2.Qxd7#
- 2.Qb7#
- 1...c3
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...d6
- 2.Sd3#
- 2.Sa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sd7#
- 2.Qb7#
- 1...Bxd4!
- threat
- 1.Rff4?
- threat
- 2.Sb3#
- 1...Rxb5
- 2.Re2#
- 1...Rb4
- 2.Re2#
- 1...Rb3
- 2.Sxb3#
- 1...Ra5
- 2.Re1#
- 1...Se6
- 2.Qxd7#
- 1...Bxd4!
- threat
- 1.Ref4?
- threat
- 2.Sb3#
- 1...Rxb5
- 2.Rf2#
- 1...Rb4
- 2.Rf2#
- 1...Rb3
- 2.Sxb3#
- 1...Ra5
- 2.Rf1#
- 1...Se6
- 2.Qxd7#
- 1...Bxd4!
- threat
- 1.Rf2?
- Keys
- 1.Rd3!
- threat
- 2.Sb3#
- 1...Rxh1
- 2.Qb7#
- 1...Rxb5
- 2.Re2#
- 1...Rb4
- 2.Re2#
- 1...Rb3
- 2.Sxb3#
- 2.Re2#
- 1...Rg2
- 2.a8Q#
- 2.a8B#
- 1...Ra5
- 2.Re1#
- 1...Se6
- 2.Qxd7#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD::QAB(F)
- R(b);N_GUARD,XB(A)::QAB(F)
- R(c);N_GUARD::P=Q
- B(a);S_CUTR(b)::QAB(F)
- S(h);N_GUARD::QAR2(F),XP(g)
- P(f);SBLOCK,XR(D)::QAR(F)+S(G)
- Tries
- Try
- R(B);
- Threat
- QAR(F)+S(G)
- Vars
- R(b);N_GUARD,XB(A)::QAB(F)
- R(b);N_GUARD,XQ(F)::B(A)+R(D)
- B(a);SBLOCK,XP(C)::B(A)+R(D)
- R(b);::QAR(F)+S(G),XR(b)
- R(b);N_GUARD::B(A)+R(D)
- S(h);N_GUARD::QAR2(F),XP(g)
- Refutation
- R(c);
- Try
- R(B);
- Threat
- DUALS(3)
- Vars
- R(c);XR(B)::QAR(F)+S(G)
- B(a);XP(C)::P=Q
- P(f);P_SPINP(f),XR(D)::QAR(F)+S(G)
- R(b);::P=Q
- R(c);::P=Q
- Refutation
- R(b);XQ(F)
- Try
- R(B);
- Threat
- DUALS(7)
- Vars
- R(b);XB(A)::QAB(F)
- R(b);XR(B)::QAR(F)+S(G),XR(b)
- P(f);P_SPINP(f),XR(D)::QAR(F)+S(G)
- R(c);::QAB(F)
- Refutation
- B(a);XP(C)
- Try
- R(B);
- Threat
- QAR(F)+S(G)
- Vars
- R(b);N_GUARD,XQ(F)::B(A)+R(D)
- R(b);N_GUARD::B(A)+R(D)
- R(b);::QAR(F)+S(G),XR(b)
- R(c);N_GUARD::B(A)+R(D)
- S(h);N_GUARD::QAR2(F),XP(g)
- Refutation
- B(a);XP(C)
- Try
- R(D);
- Threat
- QAR(F)+S(G)
- Vars
- R(b);N_GUARD,XQ(F)::B(A)+R(B)
- R(b);N_GUARD::B(A)+R(B)
- R(b);::QAR(F)+S(G),XR(b)
- R(c);N_GUARD::B(A)+R(B)
- S(h);N_GUARD::QAR2(F),XP(g)
- Refutation
- B(a);XP(C)
- Try
- Actual
- R(B);
- Threat
- QAR(F)+S(G)
- Vars
- R(b);N_GUARD,XB(A)::QAB(F)
- R(b);N_GUARD,XQ(F)::B(A)+R(D)
- R(b);N_GUARD::B(A)+R(D)
- R(c);N_GUARD::P=Q
- R(c);N_GUARD::B(A)+R(D)
- S(h);N_GUARD::QAR2(F),XP(g)
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