MESON Chess Problem Database
Problem Display
PID: 15545 (8/q7/bNR5/Rp1pkp2/2p1P2Q/1PP3PB/1B1Ppr1p/6nK w - - 0 1)
Hoffmann, Fritz
6th Comm., Sachsische Zeitung, 1985
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxb6
- 2.Qe7#
- 1...Qb8
- 2.Sd7#
- 2.Qe7#
- 1...Qd7
- 2.Sxd7#
- 1...Qe7
- 2.Qxe7#
- 1...Qa8
- 2.Sd7#
- 2.Qe7#
- 1...Rg2
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Bb7
- 2.Sd7#
- 2.Qe7#
- 1...Sf3
- 2.Qf4#
- 1...cxb3
- 2.d4#
- 1...b4
- 2.Rxd5#
- 1...dxe4
- 2.Qf6#
- 1...d4
- 2.Sxc4#
- 2.cxd4#
- 1...fxe4
- 2.Re6#
- 1...f4
- 2.Re6#
- 1...Qxb6
- Tries
- 1.Sxc4+?
- 1...bxc4
- 2.Rxd5#
- 1...dxc4!
- 1...bxc4
- 1.Rxb5?
- threat
- 2.Sxc4#
- 2.Rxd5#
- 1...Qxb6
- 2.Rxd5#
- 2.Qe7#
- 1...cxb3
- 2.Sc4#
- 2.Rxd5#
- 2.d4#
- 2.c4#
- 1...Rf4
- 2.Qxf4#
- 1...f4
- 2.Re6#
- 1...Qd7
- 2.Sxc4#
- 2.Sxd7#
- 1...Qf7
- 2.Sxc4#
- 1...Bxb5!
- threat
- 1.d3?
- threat
- 2.Qf6#
- 2.d4#
- 1...Qxb6
- 2.Qf6#
- 2.Qe7#
- 2.Qh8#
- 1...fxe4
- 2.Re6#
- 2.d4#
- 1...Qe7
- 2.Qxe7#
- 2.d4#
- 1...Qf7
- 2.d4#
- 1...Qg7
- 2.d4#
- 1...Rf4
- 2.Qf6#
- 2.Qxf4#
- 2.gxf4#
- 1...Sf3
- 2.Qf6#
- 2.Qf4#
- 1...d4
- 2.Sxc4#
- 2.Qf6#
- 2.cxd4#
- 1...f4
- 2.Re6#
- 2.Qg5#
- 2.Qf6#
- 2.Qh5#
- 1...cxd3!
- threat
- 1.exd5?
- threat
- 2.Re6#
- 2.Qd4#
- 1...Rf4
- 2.Re6#
- 2.Qxf4#
- 1...f4
- 2.Re6#
- 1...Qd7
- 2.Qd4#
- 1...Qe7
- 2.Qxe7#
- 2.Qd4#
- 1...Qf7
- 2.Qd4#
- 1...Bc8
- 2.Qd4#
- 1...Sf3
- 2.Re6#
- 2.Qf4#
- 1...Qxb6!
- threat
- 1.exf5?
- threat
- 2.Re6#
- 2.Qd4#
- 1...Qxb6
- 2.Qe7#
- 1...Rxf5
- 2.Qd4#
- 1...Rf4
- 2.Re6#
- 2.Qxf4#
- 1...Qd7
- 2.Sxd7#
- 2.Qd4#
- 1...Qe7
- 2.Qxe7#
- 2.Qd4#
- 1...Qf7
- 2.Qd4#
- 1...Bc8
- 2.Qd4#
- 1...Sf3
- 2.Re6#
- 2.Qf4#
- 1...d4
- 2.Re6#
- 2.Qxd4#
- 2.cxd4#
- 1...Sxh3!
- threat
- 1.Sxc4+?
- Keys
- 1.bxc4!
- threat
- 2.d4#
- 1...Qxb6
- 2.Qe7#
- 1...bxc4
- 2.Rxd5#
- 1...dxc4
- 2.Sxc4#
- 1...dxe4
- 2.Qf6#
- 1...fxe4
- 2.Re6#
- 1...Rf4
- 2.Qxf4#
- 1...f4
- 2.Re6#
- 1...Sf3
- 2.Qf4#
- 1...d4
- 2.cxd4#
- threat
- 1.bxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(k);N_GUARD,XS(K)::QAR2(I)
- Q(k);N_GUARD::S(K),XQ(k)
- Q(k);N_GUARD::QAR2(I),XQ(k)
- R(c);N_GUARD::QAB1(I)
- R(c);N_GUARD::QAB1(I),XR(c)
- S(a);S_CUTR(c)::QAB1(I)
- P(e);N_GUARD,XP(D)::P(C)
- P(f);OGATE,P_SPINP(g)::R1(J),XP(g)
- P(g);P_SPINP(f),SBLOCK,XP(H)::QAB1(I)
- P(i);XP(H)::R1(L)
- P(i);::R1(L)
- Tries
- Try
- S(K);CHECK,XP(e)
- Vars
- P(f);OGATE,P_SPINP(g),XS(K)::R1(J),XP(g)
- Refutation
- P(g);P_SPINP(f),XS(K)
- Try
- R(J);P_PINP(g),XP(f)
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD::QAB1(I),XR(c)
- P(i);::R1(L)
- Q(k);::S(K),XP(e)
- Refutation
- B(j);N_SPINP(g),XR(J)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(k);::P(C)
- Refutation
- P(e);XP(C)
- Try
- P(H);XP(g)
- Threat
- DUALS(2)
- Vars
- P(i);::R1(L)
- Q(k);::QAB1(I)
- B(j);::QAB1(I)
- Refutation
- Q(k);XS(K)
- Try
- P(H);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(k);N_GUARD,XS(K)::QAR2(I)
- R(c);XP(H)::QAB1(I)
- Q(k);::QAB1(I)
- B(j);::QAB1(I)
- Refutation
- S(a);XB(G)
- Try
- Actual
- P(D);XP(e)
- Threat
- P(C)
- Vars
- Q(k);N_GUARD,XS(K)::QAR2(I)
- P(f);OGATE,P_SPINP(g),XP(D)::R1(J),XP(g)
- P(g);P_SPINP(f),XP(D)::S(K),XP(g)
- P(g);P_SPINP(f),SBLOCK,XP(H)::QAB1(I)
- P(i);XP(H)::R1(L)
- R(c);N_GUARD::QAB1(I),XR(c)
- P(i);::R1(L)
- S(a);S_CUTR(c)::QAB1(I)
- P(g);OGATE,P_SPINP(f)::P(E),XP(g)
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