MESON Chess Problem Database
Problem Display
PID: 133017 (8/4NbKp/1pQ1rRp1/3Bk3/R1n5/3p4/q7/6B1 w - - 0 1)
Petkov, Petko Andonov
The Field, 1960
(First published on Thu Jan 28 1960)
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxf6
- 2.Qxf6#
- 1...Be8
- 2.Qxe6#
- 1...Sb2
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Sd2
- 2.Bh2#
- 2.Bd4#
- 1...Sa3
- 2.Bd4#
- 2.Re4#
- 1...Se3
- 2.Re4#
- 1...Sa5
- 2.Bd4#
- 2.Re4#
- 1...Sd6
- 2.Bd4#
- 2.Qc3#
- 1...g5
- 2.Rf5#
- 1...Rxf6
- Tries
- 1.Sxg6+?
- 1...Bxg6
- 2.Qxe6#
- 1...hxg6!
- 1...Bxg6
- 1.Bh1?
- threat
- 2.Qd5#
- 1...Rxc6
- 2.Sxc6#
- 1...Rxf6
- 2.Qxf6#
- 1...Rxe7
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Sb2
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Sd2
- 2.Bh2#
- 2.Bd4#
- 1...Sa3
- 2.Bd4#
- 2.Re4#
- 1...Se3
- 2.Re4#
- 1...Sa5
- 2.Bd4#
- 2.Re4#
- 1...Sd6
- 2.Bd4#
- 2.Qc3#
- 1...Qg2!
- threat
- 1.Bg2?
- threat
- 2.Qd5#
- 1...Rxc6
- 2.Sxc6#
- 1...Rxf6
- 2.Qxf6#
- 1...Rxe7
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Sb2
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Sd2
- 2.Bh2#
- 2.Bd4#
- 1...Sa3
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Se3
- 2.Bh2#
- 2.Re4#
- 1...Sa5
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Sd6
- 2.Bh2#
- 2.Bd4#
- 2.Qc3#
- 1...Qxg2!
- threat
- 1.Bxe6?
- threat
- 2.Qd5#
- 1...Bxe6
- 2.Qxe6#
- 1...Sb2
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 2.Qc7#
- 1...Sd2
- 2.Bh2#
- 2.Bd4#
- 2.Qc7#
- 1...Sa3
- 2.Bd4#
- 2.Re4#
- 2.Qc7#
- 1...Se3
- 2.Re4#
- 2.Qc7#
- 1...Sa5
- 2.Bd4#
- 2.Re4#
- 2.Qc7#
- 1...Sd6
- 2.Bd4#
- 2.Qc3#
- 1...Qg2!
- threat
- 1.Rxc4?
- threat
- 2.Bd4#
- 2.Re4#
- 1...Rxf6
- 2.Re4#
- 2.Qxf6#
- 1...Qg2
- 2.Bd4#
- 1...Qa1
- 2.Bh2#
- 2.Re4#
- 1...Qb2
- 2.Re4#
- 1...Qe2
- 2.Bd4#
- 1...Qf2
- 2.Re4#
- 1...Qa4
- 2.Bh2#
- 2.Bd4#
- 1...Qxc4!
- threat
- 1.Qc7+?
- 1...Sd6
- 2.Bd4#
- 2.Re4#
- 2.Qc3#
- 1...Rd6!
- 1...Sd6
- 1.Sxg6+?
- Keys
- 1.Bf3!
- threat
- 2.Qd5#
- 1...Rxc6
- 2.Sxc6#
- 1...Rxf6
- 2.Qxf6#
- 1...Rxe7
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Sb2
- 2.Bh2#
- 2.Bd4#
- 2.Re4#
- 1...Sd2
- 2.Bh2#
- 2.Bd4#
- 1...Sa3
- 2.Bd4#
- 2.Re4#
- 1...Se3
- 2.Re4#
- 1...Sa5
- 2.Bd4#
- 2.Re4#
- 1...Sd6
- 2.Bd4#
- 2.Qc3#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(f);OGATE,XR(E)::QAB1(D),XR(f)
- B(h);N_GUARD::QAR1(D),XR(f)
- S(c);OGATE::R1(B)
- P(g);N_GUARD::R1(E)
- Tries
- Try
- S(F);CHECK,XP(g)
- Vars
- B(h);XS(F)::QAR1(D),XR(f)
- Refutation
- P(i);XS(F)
- Try
- B(C);
- Threat
- QAR1(D)
- Vars
- R(f);XQ(D)::S(F),XR(f)
- R(f);OGATE,XR(E)::QAB1(D),XR(f)
- R(f);XS(F)::QAR1(D)
- R(f);::QAR1(D)
- S(c);OGATE::R1(B)
- Refutation
- Q(a);
- Try
- B(C);
- Threat
- QAR1(D)
- Vars
- R(f);XQ(D)::S(F),XR(f)
- R(f);OGATE,XR(E)::QAB1(D),XR(f)
- R(f);XS(F)::QAR1(D)
- R(f);::QAR1(D)
- Refutation
- Q(a);XB(C)
- Try
- B(C);XR(f)
- Threat
- QAR1(D)
- Vars
- B(h);OGATE,XB(C)::QAR1(D),XB(h)
- Refutation
- Q(a);
- Try
- R(B);XS(c)
- Threat
- DUALS(2)
- Vars
- Q(a);::B(A)
- Q(a);::R1(B)
- Refutation
- Q(a);XR(B)
- Try
- Q(D);CHECK
- Refutation
- R(f);P_SPINR(f)
- Try
- Actual
- B(C);
- Threat
- QAR1(D)
- Vars
- R(f);XQ(D)::S(F),XR(f)
- R(f);OGATE,XR(E)::QAB1(D),XR(f)
- R(f);XS(F)::QAR1(D)
- R(f);::QAR1(D)
- S(c);OGATE::R1(B)
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