MESON Chess Problem Database
Problem Display
PID: 42028 (8/2K5/bp2p3/2pkN3/R5p1/1r4Q1/2PbN1P1/B3RB2 w - - 0 1)
Bonivento, Oscar
1st Prize, Dortmunder Zeitung, 1938
#2
10 + 8
| 1523 | L'Illustrazione Italiana | 1938 |
| 1099 | WCSC | 1984 |
| 5396 | World Chess Solving Championship 1977-1996 | 1997 |
| 4436 | Problemi Opera omnia | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Sf4#
- 1...Rb5
- 2.Qd3#
- 1...Bxe1
- 2.Sf4#
- 1...Bc3
- 2.Sf4#
- 1...Bb4
- 2.Sf4#
- 1...Bf4
- 2.Sxf4#
- 1...Ba5
- 2.Sf4#
- 1...Re3
- Tries
- 1.Sf3?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Bf4+
- 2.Sxf4#
- 1...Bb4
- 2.Sf4#
- 1...Bc4
- 2.Qe5#
- 1...c4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sf4#
- 2.Qd6#
- 1...Bc3
- 2.Sf4#
- 2.Qd6#
- 1...Rb4!
- threat
- 1.Sxg4?
- threat
- 2.Sf6#
- 2.Qe5#
- 2.Qd6#
- 1...Bf4+
- 2.Sxf4#
- 1...Rxg3
- 2.Sf6#
- 1...Bb4
- 2.Sf4#
- 1...Bc4
- 2.Sf6#
- 2.Qe5#
- 1...c4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sf4#
- 2.Sf6#
- 2.Qd6#
- 1...Rf3
- 2.Qe5#
- 2.Qd6#
- 2.Qxf3#
- 1...Bc3
- 2.Sf4#
- 2.Se3#
- 2.Qd6#
- 2.Qf3#
- 1...Bg5
- 2.Qe5#
- 2.Qd6#
- 1...Rb4!
- threat
- 1.Sc6?
- threat
- 2.Se7#
- 2.Qe5#
- 2.Qd6#
- 1...Bf4+
- 2.Sxf4#
- 1...Rxg3
- 2.Se7#
- 1...Bb4
- 2.Sf4#
- 1...Bc4
- 2.Qe5#
- 1...c4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sf4#
- 2.Se7#
- 2.Qd6#
- 1...Bc3
- 2.Sf4#
- 2.Se7#
- 2.Qd6#
- 1...Bg5
- 2.Qe5#
- 2.Qd6#
- 1...Rb4!
- threat
- 1.Sg6?
- threat
- 2.Se7#
- 2.Qe5#
- 2.Qd6#
- 1...Bf4+
- 2.Sexf4#
- 2.Sgxf4#
- 1...Rxg3
- 2.Se7#
- 1...Bb4
- 2.Sef4#
- 1...Bc4
- 2.Qe5#
- 1...c4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sef4#
- 2.Sgf4#
- 2.Se7#
- 2.Qd6#
- 1...Bc3
- 2.Sef4#
- 2.Se7#
- 2.Qd6#
- 1...Bg5
- 2.Qe5#
- 2.Qd6#
- 1...Rb4!
- threat
- 1.Sd7?
- threat
- 2.Sf6#
- 2.Qe5#
- 2.Qd6#
- 1...Bf4+
- 2.Sxf4#
- 1...Rxg3
- 2.Sxb6#
- 2.Sf6#
- 1...Bb4
- 2.Sf4#
- 1...Bc4
- 2.Sf6#
- 2.Qe5#
- 1...c4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sf4#
- 2.Sxb6#
- 2.Sf6#
- 2.Qd6#
- 1...Rf3
- 2.Sxb6#
- 2.Qe5#
- 2.Qd6#
- 1...Bc3
- 2.Sf4#
- 2.Qd6#
- 1...Bg5
- 2.Qe5#
- 2.Qd6#
- 1...Rb4!
- threat
- 1.Qxb3+?
- 1...Bc4
- 2.Qxc4#
- 1...c4!
- 1...Bc4
- 1.Sf3?
- Keys
- 1.Sc4!
- threat
- 2.Qe5#
- 1...Bf4+
- 2.Sxf4#
- 1...Ke4
- 2.Qe5#
- 1...Rxg3
- 2.Sxb6#
- 1...Rb4
- 2.Qd3#
- 1...Bb4
- 2.Sf4#
- 1...e5
- 2.Qxe5#
- 1...Re3
- 2.Sxb6#
- 1...Bc3
- 2.Se3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(b);S_CUTB(a)::S(E)
- R(b);N_GUARD,S_CUTB(f)::QAR2(G)
- B(a);N_GUARD,XR(B)::S(E)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD,P_PINS(I)::S(E),XB(a)
- Tries
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::S(E),XB(a)
- B(a);N_GUARD::S(E)
- B(f);::QAR1(G)
- P(d);::QAR1(G)
- P(h);::QAR1(G),XP(h)
- Refutation
- R(b);
- Try
- S(I);XP(c)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::S(E),XB(a)
- R(b);XQ(G)::S(I)
- B(a);N_GUARD::S(E)
- P(d);::QAR1(G)
- P(h);::QAR1(G),XP(h)
- Refutation
- R(b);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::S(E),XB(a)
- R(b);XQ(G)::S(I)
- B(a);N_GUARD::S(E)
- B(f);::QAR1(G)
- P(d);::QAR1(G)
- P(h);::QAR1(G),XP(h)
- Refutation
- R(b);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- R(b);XQ(G)::S(I)
- B(a);N_GUARD::S(E)
- B(f);::QAR1(G)
- P(d);::QAR1(G)
- P(h);::QAR1(G),XP(h)
- Refutation
- R(b);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::S(E),XB(a)
- B(a);N_GUARD::S(E)
- P(d);::QAR1(G)
- P(h);::QAR1(G),XP(h)
- Refutation
- R(b);
- Try
- Q(G);CHECK,XR(b)
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAB1(G),XB(f)
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- S(I);
- Threat
- QAR1(G)
- Vars
- B(a);CHECK,N_GUARD::S(E),XB(a)
- K(e);S_FLIGHT::QAR1(G)
- R(b);N_GUARD,XQ(G)::S(I),XP(g)
- R(b);N_GUARD::QAR2(G)
- B(a);N_GUARD::S(E)
- P(h);::QAR1(G),XP(h)
- R(b);N_GUARD::S(I),XP(g)
- B(a);N_GUARD,S_CUTR(b)::S(I)
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