MESON Chess Problem Database
Problem Display
PID: 274337 (8/4N1K1/3p1Rp1/2r1k3/1Q1p1p2/4r3/2P2Nq1/2B5 w - - 0 1)
Zimmermann, Otto
Zurcher Woche, 1963
#2
7 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Sg4#
- 1...Qd5
- 2.Sxg6#
- 1...Re1
- 2.Bxf4#
- 1...Re2
- 2.Bxf4#
- 1...Ra3
- 2.Bxf4#
- 1...Rb3
- 2.Bxf4#
- 1...Rec3
- 2.Bxf4#
- 1...Rd3
- 2.Bxf4#
- 1...Rg3
- 2.Bxf4#
- 1...Rh3
- 2.Bxf4#
- 1...Re4
- 2.Sd3#
- 1...Rxc2
- 2.Qxd6#
- 1...Rcc3
- 2.Qxd6#
- 1...Rc4
- 2.Qxd6#
- 1...Ra5
- 2.Qxd6#
- 1...Rb5
- 2.Qxd6#
- 1...Rd5
- 2.Sc6#
- 1...Rc7
- 2.Qxd6#
- 1...Rc8
- 2.Qxd6#
- 1...d3
- 2.Qxf4#
- 1...Qe4
- Tries
- 1.Sd3+?
- 1...Ke4
- 2.Rxf4#
- 1...Rxd3!
- 1...Ke4
- 1.Bxe3?
- threat
- 2.Bxd4#
- 2.Bxf4#
- 2.Qxd4#
- 1...Qxf2
- 2.Qxd4#
- 1...dxe3
- 2.Sd3#
- 2.Qxf4#
- 1...Qf3
- 2.Bxd4#
- 2.Qxd4#
- 1...Qe4
- 2.Sg4#
- 1...Qd5
- 2.Sxg6#
- 2.Bxf4#
- 1...Qh2
- 2.Bxd4#
- 2.Qxd4#
- 1...Qg3
- 2.Bxd4#
- 2.Qxd4#
- 1...Qg4
- 2.Bxd4#
- 2.Qxd4#
- 1...Qg5
- 2.Bxd4#
- 2.Qxd4#
- 1...Rc4
- 2.Bxf4#
- 2.Qxd6#
- 1...Rd5
- 2.Sc6#
- 2.Bxf4#
- 1...d3
- 2.Sxd3#
- 2.Bd4#
- 2.Bxf4#
- 2.Qd4#
- 2.Qxf4#
- 1...f3
- 2.Bxd4#
- 2.Bf4#
- 2.Qxd4#
- 1...g5
- 2.Bxd4#
- 2.Qxd4#
- 1...fxe3!
- threat
- 1.Qxc5+?
- 1...Qd5
- 2.Sc6#
- 2.Sxg6#
- 2.Qxd5#
- 1...d5
- 2.Sc6#
- 2.Qd6#
- 2.Qc7#
- 1...dxc5!
- 1...Qd5
- 1.Sd3+?
- Keys
- 1.c3!
- threat
- 2.Qxd4#
- 2.cxd4#
- 1...Qxf2
- 2.Qxd4#
- 1...Rexc3
- 2.Bxf4#
- 1...Rcxc3
- 2.Qxd6#
- 1...dxc3
- 2.Qxf4#
- 1...Qe4
- 2.Sg4#
- 1...Qd5
- 2.Sxg6#
- 1...Rd3
- 2.Bxf4#
- 1...Re4
- 2.Sd3#
- 1...Rc4
- 2.Qxd6#
- 1...Rd5
- 2.Sc6#
- 1...d3
- 2.Qd4#
- 2.Qxf4#
- threat
- 1.c3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(a);N_GUARD,SBLOCK::S(C)
- Q(a);N_GUARD,SBLOCK::S(F),XP(h)
- R(b);OGATE::B(A),XP(d)
- R(b);N_GUARD,SBLOCK::S(C)
- R(e);OGATE,XP(B)::QAB1(D),XP(g)
- R(e);OGATE::QAB1(D),XP(g)
- R(e);N_GUARD,SBLOCK,S_CUTQ(a)::S(F)
- R(e);OGATE,P_PINS(F)::QAB1(D),XP(g)
- P(c);OGATE::QAB1(D),XP(d)
- Tries
- Try
- S(C);CHECK
- Vars
- K(f);N_GUARD,P-FLIGHT,P_SPINP(c),S_CUTR(b)::R1(E),XP(d)
- Refutation
- R(b);XS(C)
- Try
- B(A);XR(b)
- Threat
- DUALS(3)
- Vars
- Q(a);XS(C)::QAB1(D),XP(c)
- Q(a);N_GUARD,SBLOCK::S(C)
- Refutation
- P(d);XB(A)
- Try
- Q(D);CHECK,XR(e)
- Refutation
- P(g);XQ(D)
- Try
- Actual
- P(B);
- Threat
- DUALS(2)
- Vars
- Q(a);XS(C)::QAB1(D),XP(c)
- R(b);OGATE,XP(B)::B(A),XP(d)
- R(e);OGATE,XP(B)::QAB1(D),XP(g)
- P(c);OGATE,XP(B)::QAB1(D),XP(d)
- Q(a);N_GUARD,SBLOCK::S(C)
- Q(a);N_GUARD,SBLOCK::S(F),XP(h)
- R(b);OGATE::B(A),XP(d)
- R(b);N_GUARD,SBLOCK::S(C)
- R(e);OGATE::QAB1(D),XP(g)
- R(e);N_GUARD,SBLOCK,S_CUTQ(a)::S(F)
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