MESON Chess Problem Database
Problem Display
PID: 254314 (2RB1bbK/3p2p1/p2k2p1/3Np3/1P1R4/2PQ1N1B/q7/8 w - - 0 1)
Hjelle, David
Schach-Magazin, 1948
#2
10 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
| 3713 | Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qxa6#
- 1...Qb3
- 2.Qxa6#
- 1...Qxd5
- 2.Qxa6#
- 1...Qb2
- 2.Qxa6#
- 1...Qc2
- 2.Qxa6#
- 1...Qd2
- 2.Qxa6#
- 1...Qf2
- 2.Qxa6#
- 1...Qg2
- 2.Qxa6#
- 1...Qh2
- 2.Qxa6#
- 1...Be7
- 2.Bxe7#
- 1...Bxd5
- 2.Qxg6#
- 1...a5
- 2.Qa6#
- 1...Qb1
- Tries
- 1.Sd2?
- threat
- 2.Se4#
- 1...Qxd2
- 2.Qxa6#
- 1...e4
- 2.Qg3#
- 1...exd4!
- threat
- 1.Se3+?
- 1...Qd5
- 2.Sc4#
- 2.Qxa6#
- 1...Bd5
- 2.Qxg6#
- 1...exd4!
- 1...Qd5
- 1.Sf4+?
- 1...Qd5
- 2.Qxa6#
- 1...Bd5
- 2.Qxg6#
- 1...exd4!
- 1...Qd5
- 1.Sb6+?
- 1...Qd5
- 2.Sc4#
- 1...Bd5
- 2.Qxg6#
- 1...exd4!
- 1...Qd5
- 1.Sf6+?
- 1...Qd5
- 2.Se4#
- 2.Se8#
- 2.Qxa6#
- 1...Bd5
- 2.Se4#
- 2.Se8#
- 1...exd4!
- 1...Qd5
- 1.Se7+?
- 1...Qd5
- 2.Qxa6#
- 1...Bd5
- 2.Qxg6#
- 1...exd4!
- 1...Qd5
- 1.Rc5?
- threat
- 2.Bc7#
- 1...Qxd5
- 2.Qxa6#
- 1...Bxd5
- 2.Qxg6#
- 1...Qa5!
- threat
- 1.Rc6+?
- 1...dxc6
- 2.Bc7#
- 1...Kxc6!
- 1...dxc6
- 1.Qb5?
- threat
- 2.Bc7#
- 2.Qxd7#
- 2.Qc5#
- 2.Qb6#
- 2.Qb8#
- 1...Qxd5
- 2.Qxa6#
- 2.Qxd7#
- 2.Qc5#
- 2.Qb6#
- 2.Qb8#
- 1...Bxd5
- 2.Qxd7#
- 2.Qc5#
- 2.Qb6#
- 2.Qb8#
- 1...exd4
- 2.Bc7#
- 2.Qxd7#
- 2.Qc5#
- 1...Qc4
- 2.Qxd7#
- 1...Qa4
- 2.Bc7#
- 2.Qc5#
- 2.Qb8#
- 1...Qa5
- 2.Qxd7#
- 1...Be6
- 2.Bc7#
- 2.Qc5#
- 2.Qb6#
- 2.Qb8#
- 1...axb5!
- threat
- 1.Qf5?
- threat
- 2.Qxd7#
- 2.Qxe5#
- 2.Qxf8#
- 1...exd4
- 2.Qxd7#
- 2.Qe5#
- 1...Qe2
- 2.Qxd7#
- 2.Qxf8#
- 1...Qh2
- 2.Qxd7#
- 2.Qxf8#
- 1...Qa4
- 2.Qxe5#
- 2.Qxf8#
- 1...Be7
- 2.Bxe7#
- 2.Qxd7#
- 2.Qxe5#
- 1...Be6
- 2.Qxe5#
- 2.Qxf8#
- 1...Bf7
- 2.Qxd7#
- 2.Qxe5#
- 1...e4
- 2.Qxd7#
- 2.Qf4#
- 2.Qe5#
- 2.Qxf8#
- 1...gxf5!
- threat
- 1.Sd2?
- Keys
- 1.Sxe5!
- threat
- 2.Bc7#
- 1...Kxe5
- 2.Qg3#
- 1...Qxd5
- 2.Sc4#
- 1...Bxd5
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 1...Qa5
- 2.Sc4#
- threat
- 1.Sxe5!
This anticipates 241436(1952)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::QAR(B),XP(c)
- Q(a);N_GUARD,P_SPINQ(a),XS(G)::QAR(B),XP(c)
- Q(a);N_GUARD,P_PINB(D)::QAR(B),XP(c)
- B(h);N_GUARD::B(I),XB(h)
- B(i);N_GUARD,P_SPINB(i),XS(G)::QAR(B),XP(e)
- P(c);S_CUTQ(a)::QAR(B)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- Q(a);N_GUARD,XS(C)::QAR(B),XP(c)
- P(b);OGATEB::QAB(B)
- Refutation
- P(b);XR(F)
- Try
- S(G);CHECK
- Vars
- B(i);P_SPINB(i)::QAR(B),XP(e)
- Refutation
- P(b);P_SPINP(b),XR(F)
- Try
- S(G);CHECK
- Vars
- Q(a);P_SPINQ(a)::QAR(B),XP(c)
- B(i);P_SPINB(i)::QAR(B),XP(e)
- Refutation
- P(b);P_SPINP(b),XR(F)
- Try
- S(G);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(G)
- B(i);P_SPINB(i)::QAR(B),XP(e)
- Refutation
- P(b);P_SPINP(b),XR(F)
- Try
- S(G);CHECK
- Refutation
- P(b);P_SPINP(b),XR(F)
- Try
- S(G);CHECK
- Vars
- Q(a);P_SPINQ(a)::QAR(B),XP(c)
- B(i);P_SPINB(i)::QAR(B),XP(e)
- Refutation
- P(b);P_SPINP(b),XR(F)
- Try
- R(H);
- Threat
- B(I)
- Vars
- Q(a);N_GUARD,P_SPINQ(a),XS(G)::QAR(B),XP(c)
- B(i);N_GUARD,P_SPINB(i),XS(G)::QAR(B),XP(e)
- Refutation
- Q(a);
- Try
- R(H);CHECK
- Vars
- P(f);SBLOCK,XR(H)::B(I)
- Refutation
- K(d);P-FLIGHT,XR(H)
- Try
- Q(B);
- Threat
- DUALS(5)
- Vars
- Q(a);::QAR1(B),XP(f)
- Refutation
- P(c);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- P(e);XQ(B)
- Try
- Actual
- S(C);XP(b)
- Threat
- B(I)
- Vars
- K(d);OGATEB,S_FLIGHT,XS(C)::QAB(B)
- Q(a);N_GUARD,P_SPINQ(a),XS(G)::S(C)
- B(i);N_GUARD,P_SPINB(i),XS(G)::S(C)
- Q(a);N_GUARD::S(C),XQ(a)
- Q(a);N_GUARD::S(C)
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