MESON Chess Problem Database
Problem Display
PID: 70725 (1rRB3K/6N1/1n1p4/1b1N4/p2k1P1p/Q3nP2/1PPp4/3rq3 w - - 0 1)
Overkamp, Petrus
1st Prize, Jerusalem Post, 1951/II
(First published on Fri Dec 14 1951)
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Bd3
- 2.Qxd3#
- 1...Bd7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Sec4
- 2.Qd3#
- 1...Sexd5
- 2.Sf5#
- 1...Sbc4
- 2.Qd3#
- 1...Sbxd5
- 2.Se6#
- 1...Bd3
- Tries
- 1.Sxe3?
- threat
- 2.Sgf5#
- 2.Se6#
- 2.Bf6#
- 2.Qc3#
- 1...Rxc8
- 2.Sgf5#
- 2.Se6#
- 1...Bd3
- 2.Qxd3#
- 1...Bc4
- 2.Sgf5#
- 2.Bf6#
- 2.Qc3#
- 1...Bd7
- 2.Bf6#
- 2.Qc3#
- 2.Qd3#
- 1...Sc4
- 2.Sgf5#
- 2.Se6#
- 2.Qc3#
- 2.Qd3#
- 1...Sd5
- 2.Sef5#
- 2.Sgf5#
- 2.Se6#
- 1...Sd7
- 2.Sgf5#
- 2.Se6#
- 2.Qc3#
- 1...Qxe3!
- threat
- 1.Sb4?
- threat
- 2.Se6#
- 2.Bf6#
- 2.Qc3#
- 2.c3#
- 1...Sxc2
- 2.Sf5#
- 2.Qc3#
- 1...Sxc8
- 2.Qc3#
- 1...Bc6
- 2.Qc3#
- 1...Rc1
- 2.Se6#
- 2.Bf6#
- 2.Qc3#
- 1...Bc4
- 2.Bf6#
- 2.Qc3#
- 2.c3#
- 1...Bd7
- 2.Bf6#
- 2.Qc3#
- 2.Qd3#
- 2.c3#
- 1...Sf1
- 2.Sf5#
- 2.Qc3#
- 1...Sg2
- 2.Sf5#
- 2.Qc3#
- 1...Sec4
- 2.Sf5#
- 2.Qc3#
- 2.Qd3#
- 1...Sg4
- 2.Sf5#
- 2.Qc3#
- 1...Sed5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 2.Qc3#
- 1...Sbc4
- 2.Se6#
- 2.Qc3#
- 2.Qd3#
- 2.c3#
- 1...Sbd5
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 2.Qc3#
- 2.c3#
- 1...Rxc8!
- threat
- 1.Sxb6?
- threat
- 2.Se6#
- 2.Bf6#
- 2.Qc3#
- 1...Rxc8
- 2.Se6#
- 1...Sxc2
- 2.Sf5#
- 2.Qc3#
- 1...Bc4
- 2.Bf6#
- 2.Qc3#
- 1...Bd7
- 2.Bf6#
- 2.Qc3#
- 2.Qd3#
- 1...Sf1
- 2.Sf5#
- 2.Qc3#
- 1...Sg2
- 2.Sf5#
- 2.Qc3#
- 1...Sc4
- 2.Sf5#
- 2.Qc3#
- 2.Qd3#
- 1...Sg4
- 2.Sf5#
- 2.Qc3#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 2.Qc3#
- 1...Rxb6!
- threat
- 1.Sf6?
- threat
- 2.Se6#
- 2.Qc3#
- 1...Sxc2
- 2.Sf5#
- 2.Qc3#
- 1...Sxc8
- 2.Qc3#
- 1...Bc6
- 2.Qc3#
- 1...Bc4
- 2.Qc3#
- 1...Bd7
- 2.Qc3#
- 2.Qd3#
- 1...Sf1
- 2.Sf5#
- 2.Qc3#
- 1...Sg2
- 2.Sf5#
- 2.Qc3#
- 1...Sec4
- 2.Sf5#
- 2.Qc3#
- 2.Qd3#
- 1...Sg4
- 2.Sf5#
- 2.Qc3#
- 1...Sed5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 2.Qc3#
- 1...Sbd5
- 2.Se6#
- 1...Rxc8!
- threat
- 1.Se7?
- threat
- 2.Se6#
- 2.Qc3#
- 1...Sxc2
- 2.Sgf5#
- 2.Qc3#
- 1...Sxc8
- 2.Qc3#
- 1...Bc6
- 2.Qc3#
- 1...Bc4
- 2.Qc3#
- 1...Bd7
- 2.Qc3#
- 2.Qd3#
- 1...Sf1
- 2.Sgf5#
- 2.Qc3#
- 1...Sg2
- 2.Sgf5#
- 2.Qc3#
- 1...Sec4
- 2.Sgf5#
- 2.Qc3#
- 2.Qd3#
- 1...Sg4
- 2.Sgf5#
- 2.Qc3#
- 1...Sed5
- 2.Sef5#
- 2.Sgf5#
- 1...Sf5
- 2.Sgxf5#
- 2.Qc3#
- 1...Sbd5
- 2.Se6#
- 1...Rxc8!
- threat
- 1.Sf5+?
- 1...Kxd5
- 2.Qxd6#
- 1...Sxf5!
- 1...Kxd5
- 1.Sxe3?
- Keys
- 1.Sc7!
- threat
- 2.Qc3#
- 1...Kc4
- 2.Qc3#
- 1...Bc4
- 2.Bf6#
- 1...Sec4
- 2.Sf5#
- 1...Sed5
- 2.Sxb5#
- 1...Sbc4
- 2.Sge6#
- 1...Sbd5
- 2.Sce6#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(h);N_GUARD::QAR1(C),XB(h)
- B(h);N_GUARD::QAR1(C)
- S(d);S_CUTB(h)::QAR1(C)
- S(d);N_GUARD,SBLOCK,XS(F)::S(G)
- S(i);S_CUTB(h)::QAR1(C)
- S(i);SBLOCK,XS(F)::S(G)
- Tries
- Try
- S(F);XS(d)
- Threat
- DUALS(4)
- Vars
- B(h);N_GUARD::QAR1(C),XB(h)
- Refutation
- Q(b);XS(F)
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- S(i);XR(H)::QAB1(C)
- B(h);::QAB1(C)
- S(d);N_GUARD::S(G)
- S(i);::S(G)
- Refutation
- R(k);P_PINB(I),XR(H)
- Try
- S(F);XS(i)
- Threat
- DUALS(3)
- Vars
- R(k);P_PINB(I),XR(H)::S(G)
- S(d);N_GUARD::S(G)
- Refutation
- R(k);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(i);XR(H)::QAB1(C)
- B(h);::QAB1(C)
- S(d);N_GUARD::S(G)
- S(i);::S(G)
- Refutation
- R(k);P_PINB(I),XR(H)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(i);XR(H)::QAB1(C)
- B(h);::QAB1(C)
- S(i);::S(G)
- Refutation
- R(k);P_PINB(I),XR(H)
- Try
- S(G);CHECK
- Vars
- K(f);P-FLIGHT,XS(F)::QAR1(C),XP(j)
- Refutation
- S(d);XS(G)
- Try
- Actual
- S(F);
- Threat
- QAB1(C)
- Vars
- K(f);P-FLIGHT::QAR1(C)
- B(h);SBLOCK::B(I)
- S(d);N_GUARD,SBLOCK::S(G)
- S(d);SBLOCK::S(F),XB(h)
- S(i);SBLOCK::S(G)
- S(i);SBLOCK::S(F)
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