MESON Chess Problem Database
Problem Display
PID: 149285 (1Nb5/4RPQn/2p4b/K1k3nr/3pr2R/1Bp4q/5N1B/8 w - - 0 1)
Bacmeister, Kurt
stern, 1977
#2
9 + 11
| 15148 | Sadier Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Sd3#
- 1...Qg4
- 2.Sd3#
- 1...Qf5
- 2.Sd3#
- 1...Qe6
- 2.Sd3#
- 1...Qd7
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qxh4
- 2.Sd3#
- 1...Re1
- 2.Qxd4#
- 1...Re2
- 2.Qxd4#
- 1...Re3
- 2.Qxd4#
- 1...Rf4
- 2.Qe5#
- 1...Rg4
- 2.Qe5#
- 1...Rexh4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Qxd4#
- 1...Rxe7
- 2.Qxd4#
- 1...Bg4
- 2.Sa6#
- 1...Bf5
- 2.Sa6#
- 1...Ba6
- 2.Sxa6#
- 1...Be6
- 2.Sa6#
- 1...Bd7
- 2.Sa6#
- 1...Sf3
- 2.Sd3#
- 2.Sxe4#
- 1...Se6
- 2.Sxe4#
- 1...Sxf7
- 2.Sxe4#
- 1...Qg2
- Tries
- 1.Sd7+?
- 1...Qxd7
- 2.Sd3#
- 1...Bxd7!
- 1...Qxd7
- 1.Re5+?
- 1...Rxe5
- 2.Qxe5#
- 1...Kd6!
- 1...Rxe5
- 1.Rc7?
- threat
- 2.Rxc6#
- 1...Qe6
- 2.Sd3#
- 1...Qd7
- 2.Sd3#
- 1...Re6
- 2.Qxd4#
- 1...Bd7
- 2.Sa6#
- 1...Bb7!
- threat
- 1.Rd7?
- threat
- 2.Bd6#
- 1...Qxd7
- 2.Sd3#
- 1...Qxh2
- 2.Sd3#
- 1...Bxd7
- 2.Sa6#
- 1...Sxf7
- 2.Sxe4#
- 1...Qe6
- 2.Sd3#
- 1...Rf4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Qxd4#
- 1...Qg3!
- threat
- 1.Qf6?
- threat
- 2.Bd6#
- 2.Qxc6#
- 2.Qd6#
- 1...Qxh2
- 2.Sd3#
- 2.Qxc6#
- 1...Sxf7
- 2.Sxe4#
- 2.Qxc6#
- 1...Se6
- 2.Sxe4#
- 1...Qe6
- 2.Sd3#
- 1...Qd7
- 2.Sd3#
- 1...Qg3
- 2.Qxc6#
- 1...Rf4
- 2.Re5#
- 2.Qe5#
- 2.Qxc6#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qxc6#
- 1...Re6
- 2.Qxd4#
- 1...Be6
- 2.Sa6#
- 1...Bb7
- 2.Bd6#
- 2.Qd6#
- 1...Bd7
- 2.Sa6#
- 2.Bd6#
- 2.Qd6#
- 1...d3
- 2.Bd6#
- 2.Qd6#
- 1...Sxf6!
- threat
- 1.Qxg5+?
- 1...Qf5
- 2.Sd3#
- 2.Sxe4#
- 1...Re5
- 2.Se4#
- 1...Rxg5
- 2.Sxe4#
- 1...Bxg5
- 2.Sxe4#
- 1...Bf5
- 2.Sxe4#
- 2.Sa6#
- 2.Sd7#
- 1...Sxg5!
- 1...Qf5
- 1.Sd7+?
- Keys
- 1.Re6!
- threat
- 2.Bd6#
- 2.Rxc6#
- 1...Qxe6
- 2.Sd3#
- 1...Qxh2
- 2.Sd3#
- 2.Rxc6#
- 1...Rxe6
- 2.Qxd4#
- 1...Bxe6
- 2.Sa6#
- 1...Sxe6
- 2.Sxe4#
- 1...Sxf7
- 2.Sxe4#
- 2.Rxc6#
- 1...Qg3
- 2.Rxc6#
- 1...Rf4
- 2.Rxc6#
- 2.Qe5#
- 1...Re5
- 2.Rxc6#
- 2.Qxe5#
- 1...Bb7
- 2.Sd7#
- 2.Bd6#
- 1...Bd7
- 2.Sa6#
- 2.Sxd7#
- 2.Bd6#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 19
- Sets
- Q(b);N_GUARD::S(A)
- Q(b);N_GUARD::S(A),XQ(b)
- Q(b);N_GUARD,XR(D)::S(A)
- R(d);N_GUARD::QAB1(H),XP(c)
- R(d);N_GUARD::QAR2(H)
- R(d);N_GUARD,XR(D)::QAR2(H)
- R(d);N_GUARD::QAR2(H),XR(d)
- R(d);N_GUARD,XR(F)::QAB1(H),XP(c)
- B(k);N_GUARD::S(I)
- B(k);N_GUARD::S(I),XB(k)
- S(f);N_GUARD::S(A),XR(d)
- S(f);N_GUARD,XP(G)::S(A),XR(d)
- Tries
- Try
- S(I);CHECK
- Vars
- Q(b);XS(I)::S(A)
- Refutation
- B(k);XS(I)
- Try
- R(F);CHECK
- Vars
- R(d);OGATE,XR(F)::QAR2(H),XR(d)
- Refutation
- K(e);S_FLIGHT
- Try
- R(F);P_PINP(h)
- Threat
- R1(F),XP(h)
- Vars
- Q(b);N_GUARD::S(A)
- R(d);N_GUARD::QAB1(H),XP(c)
- B(k);N_GUARD::S(I)
- Refutation
- B(k);
- Try
- R(F);
- Threat
- B(B)
- Vars
- Q(b);N_GUARD,XR(F)::S(A)
- Q(b);N_GUARD,XB(B)::S(A)
- B(k);N_GUARD,XR(F)::S(I)
- S(f);N_GUARD,XP(G)::S(A),XR(d)
- Q(b);N_GUARD::S(A)
- R(d);N_GUARD::QAR2(H)
- R(d);N_GUARD::QAR2(H),XR(d)
- R(d);N_GUARD::QAB1(H),XP(c)
- Refutation
- Q(b);
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- S(f);N_GUARD::S(A),XR(d)
- Q(b);N_GUARD::S(A)
- Q(b);::QAR1(H),XP(h)
- R(d);N_GUARD::QAB1(H),XP(c)
- B(k);N_GUARD::S(I)
- Refutation
- S(j);XQ(H)
- Try
- Q(H);CHECK,XS(f)
- Vars
- R(d);P_SPINR(d)::S(A)
- R(g);XQ(H)::S(A),XR(d)
- B(i);XQ(H)::S(A),XR(d)
- Refutation
- S(j);XQ(H)
- Try
- Actual
- R(F);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,XR(F)::S(A)
- R(d);N_GUARD,XR(F)::QAB1(H),XP(c)
- B(k);N_GUARD,XR(F)::S(I)
- S(f);N_GUARD,XR(F)::S(A),XR(d)
- Q(b);::R1(F),XP(h)
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