MESON Chess Problem Database
Problem Display
PID: 234130 (1B6/8/3nk1K1/1p1NN3/3Qn3/8/4R3/5R1B w - - 0 1)
Benko, Pal Charles
Chess Life, 1981
#2
8 + 4
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Rf6#
- 1...Sc3
- 2.Rf6#
- 1...Sg3
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sd2
- Tries
- 1.Sb4?
- 1...Sd2
- 2.Qxd6#
- 1...Sf2
- 2.Qxd6#
- 1...Sc3
- 2.Qxd6#
- 1...Sg3
- 2.Qxd6#
- 1...Sc5
- 2.Qxd6#
- 1...Sg5
- 2.Qxd6#
- 1...Sf6
- 2.Qxd6#
- 1...Sc4
- 2.Qd7#
- 1...Sf5
- 2.Qd7#
- 1...Sb7
- 2.Qd7#
- 1...Sf7
- 2.Qd7#
- 1...Sc8
- 2.Qd7#
- 1...Se8
- 2.Qd7#
- 1...Ke7!
- 1...Sd2
- 1.Sd7?
- threat
- 2.Sc5#
- 2.Sf8#
- 1...Sb7
- 2.Sf8#
- 1...Kxd7!
- threat
- 1.Bxe4?
- threat
- 2.Rf6#
- 1...Sf5
- 2.Bxf5#
- 1...Se8
- 2.Bf5#
- 1...Sxe4!
- threat
- 1.Bxd6?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Sxd6
- 2.Rf6#
- 1...Kxd6!
- threat
- 1.Rf7?
- threat
- 2.Sf4#
- 2.Sc7#
- 2.Re7#
- 1...Sf5
- 2.Sf4#
- 2.Sc7#
- 1...Sc8
- 2.Sf4#
- 2.Sc7#
- 1...Se8
- 2.Sf4#
- 2.Re7#
- 1...Sxf7!
- threat
- 1.Qc5?
- 1...Kxe5
- 2.Sf4#
- 2.Sc7#
- 2.Rxe4#
- 1...Sxc5
- 2.Rf6#
- 1...Sd2
- 2.Rf6#
- 2.Qxd6#
- 1...Sf2
- 2.Qxd6#
- 1...Sc3
- 2.Rf6#
- 2.Qxd6#
- 1...Sg3
- 2.Rf6#
- 2.Qxd6#
- 1...Sg5
- 2.Rf6#
- 2.Qxd6#
- 1...Sf6
- 2.Rxf6#
- 2.Qxd6#
- 1...Sc4
- 2.Sf4#
- 2.Sc7#
- 1...Sf5
- 2.Sf4#
- 2.Sc7#
- 1...Sb7
- 2.Sf4#
- 2.Sc7#
- 1...Sf7
- 2.Sf4#
- 2.Sc7#
- 1...Sc8
- 2.Sf4#
- 2.Sc7#
- 1...Se8
- 2.Sf4#
- 1...b4!
- 1...Kxe5
- 1.Qxe4?
- threat
- 2.Rf6#
- 1...Sf5
- 2.Qxf5#
- 1...Se8
- 2.Qf5#
- 2.Qg4#
- 1...Sxe4!
- threat
- 1.Sb4?
- Keys
- 1.Qb4!
- 1...Kxd5
- 2.Qxd6#
- 1...Kxe5
- 2.Qxe4#
- 1...Sd2
- 2.Rf6#
- 2.Qxd6#
- 1...Sf2
- 2.Qxd6#
- 1...Sc3
- 2.Rf6#
- 2.Qxd6#
- 1...Sg3
- 2.Rf6#
- 2.Qxd6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 2.Qxd6#
- 1...Sf6
- 2.Rxf6#
- 2.Qxd6#
- 1...Sc4
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...Sb7
- 2.Sf4#
- 1...Sf7
- 2.Sf4#
- 1...Sc8
- 2.Sf4#
- 1...Se8
- 2.Sf4#
- 1...Kxd5
- 1.Qb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 5
- Sets
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- Tries
- Try
- S(E);
- Vars
- S(a);N_GUARD::QAR1(D),XS(c)
- S(c);OGATE::QAB1(D)
- Refutation
- K(d);P-FLIGHT
- Try
- S(F);P_PINS(a)
- Threat
- DUALS(2)
- Vars
- S(c);::S(F)
- Refutation
- K(d);N_SPINS(a),S_FLIGHT,XS(F)
- Try
- B(B);XS(a)
- Threat
- R1(A)
- Vars
- S(c);N_GUARD::B(B),XS(c)
- S(c);N_GUARD::B(B)
- Refutation
- S(c);XB(B)
- Try
- B(H);XS(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,SBLOCK,XB(H)::R1(A)
- Refutation
- K(d);P-FLIGHT,XB(H)
- Try
- R(A);
- Threat
- DUALS(3)
- Refutation
- S(c);XR(A)
- Try
- Q(D);
- Vars
- S(a);N_GUARD,XQ(D)::R1(A)
- S(a);N_GUARD::QAR1(D),XS(c)
- S(c);::S(E)
- Refutation
- P(b);
- Try
- Q(D);XS(a)
- Threat
- R1(A)
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Refutation
- S(c);XQ(D)
- Try
- Actual
- Q(D);
- Vars
- K(d);P_SPINS(a),S_FLIGHT,XS(E)::QAR1(D),XS(c)
- K(d);OGATEB,P-FLIGHT,P_SPINS(a),XS(F)::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D),XS(c)
- S(a);N_GUARD::R1(A)
- S(c);::S(E)
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