MESON Chess Problem Database
Problem Display
PID: 135124 (1K6/4p3/1k2n3/1BnRN3/8/8/3PQ3/R7 w - - 0 1)
Visbeen, Frank
3rd HM., Magasinet, 1956
#2
7 + 4
| 6490 | yacpdb | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sd3
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sa4
- 2.Sc4#
- 1...Se4
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sa6+
- 2.Rxa6#
- 1...Sb7
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sd7+
- 2.Sxd7#
- 1...Sb3
- Tries
- 1.Bd7?
- threat
- 2.Sc4#
- 2.Qb5#
- 1...Sa6+
- 2.Rxa6#
- 2.Qxa6#
- 1...Sd4
- 2.Sc4#
- 1...Sd3
- 2.Sc4#
- 2.Rb5#
- 1...Sa4
- 2.Qb5#
- 1...Sc7
- 2.Sc4#
- 1...Sxd7+!
- threat
- 1.Be8?
- threat
- 2.Sc4#
- 2.Qb5#
- 1...Sa6+
- 2.Rxa6#
- 2.Qxa6#
- 1...Sd4
- 2.Sc4#
- 1...Sd3
- 2.Sc4#
- 2.Rb5#
- 1...Sa4
- 2.Qb5#
- 1...Sc7
- 2.Sc4#
- 1...Sd7+!
- threat
- 1.Qc4?
- 1...Sa6+
- 2.Rxa6#
- 1...Sd7+
- 2.Sxd7#
- 1...Sd4
- 2.Qxc5#
- 1...Sb3
- 2.Sd7#
- 2.Ra6#
- 2.Qc6#
- 1...Sd3
- 2.Sd7#
- 2.Ra6#
- 2.Qc6#
- 1...Se4
- 2.Sd7#
- 2.Ra6#
- 2.Qc6#
- 1...Sb7
- 2.Sd7#
- 2.Ra6#
- 2.Qc6#
- 1...Sf4
- 2.Qxc5#
- 1...Sg5
- 2.Qxc5#
- 1...Sc7
- 2.Qxc5#
- 1...Sg7
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...Sf8
- 2.Qxc5#
- 1...Sa4!
- 1...Sa6+
- 1.Qe3?
- 1...Kxb5
- 2.Qb3#
- 1...Sf4
- 2.Qxc5#
- 1...Sg5
- 2.Qxc5#
- 1...Sc7
- 2.Qxc5#
- 1...Sg7
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...Sf8
- 2.Qxc5#
- 1...Sd4!
- 1...Kxb5
- 1.d4?
- 1...Sa6+
- 2.Rxa6#
- 1...Sd7+
- 2.Sxd7#
- 1...Sa4
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sd3
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Se4
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sb7
- 2.Sc4#
- 2.Sd7#
- 2.Ra6#
- 1...Sf4
- 2.dxc5#
- 1...Sg5
- 2.dxc5#
- 1...Sc7
- 2.dxc5#
- 1...Sg7
- 2.dxc5#
- 1...Sd8
- 2.dxc5#
- 1...Sf8
- 2.dxc5#
- 1...Sxd4!
- 1...Sa6+
- 1.Bd7?
- Keys
- 1.Rb1!
- threat
- 2.Sc4#
- 1...Sa6+
- 2.Bxa6#
- 1...Sd7+
- 2.Bxd7#
- 1...Ka5
- 2.Sc4#
- threat
- 1.Rb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- S(a);::S(F)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);CHECK,N_GUARD::S(F),XS(a)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- S(c);::S(F)
- S(a);::QAR1(C)
- Refutation
- S(a);CHECK,XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- S(c);::S(F)
- S(a);::QAR1(C)
- Refutation
- S(a);CHECK
- Try
- Q(C);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);CHECK,N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(C),XS(a)
- Refutation
- S(a);
- Try
- Q(C);P_PINS(a)
- Vars
- K(b);OGATEB,P-FLIGHT,XB(D)::QAR2(C)
- S(c);N_GUARD::QAB1(C),XS(a)
- Refutation
- S(c);N_SPINS(a)
- Try
- P(B);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);CHECK,N_GUARD::S(F),XS(a)
- S(a);::S(F)
- S(c);N_GUARD::P(B),XS(a)
- Refutation
- S(c);XP(B)
- Try
- Actual
- R(A);
- Threat
- S(F)
- Vars
- S(a);CHECK,N_GUARD::R(A)+B(D),XS(a)
- K(b);S_FLIGHT::S(F)
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