MESON Chess Problem Database

Problem Display
PID: 5137 (8/8/8/8/1B6/8/2k5/K2b2RQ w - - 0 1)

Havel, Miroslav

Romanleser, 1900

8/8/8/8/1B6/8/2k5/K2b2RQ

#2

4 + 2

3757 Schachminiaturen I 1902
6024 Bohemian Garnets 1923
81 Chess 1946
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1952
4872 Themes-64 1956
4312 Ceske Granaty 1975
2012 Miniature Chess Problems from Many Countries 1981
17120 Tehtavashakin kasikirja (Kallio) 1995
3310 2345 Chess Problems 1997
3713 Snap 2001
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qc6#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Qc6#
      • 1...Bf3
        • 2.Qb1#
      • 1...Be2
        • 2.Qb1#
      • 1...Bg4
        • 2.Qb1#
      • 1...Bh5
        • 2.Qb1#
      • 1...Kc1!
    • 1.Qf3?
      • threat
        • 2.Qxd1#
        • 2.Qc3#
      • 1...Kc1
        • 2.Qxd1#
        • 2.Qc6#
        • 2.Qc3#
      • 1...Be2
        • 2.Qc3#
      • 1...Bxf3!
    • 1.Qe4+?
      • 1...Kc1
        • 2.Qb1#
        • 2.Qc6#
        • 2.Qc4#
      • 1...Kb3!
    • 1.Qd5?
      • threat
        • 2.Qc4#
        • 2.Qxd1#
      • 1...Kc1
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qxd1#
        • 2.Qd2#
        • 2.Qc5#
      • 1...Bf3
        • 2.Qc4#
      • 1...Bg4
        • 2.Qc4#
      • 1...Bh5
        • 2.Qc4#
      • 1...Be2!
    • 1.Qh3?
      • threat
        • 2.Qc3#
      • 1...Kc1
        • 2.Qc8#
        • 2.Qc3#
      • 1...Bf3!
    • 1.Qh7+?
      • 1...Kc1
        • 2.Qb1#
        • 2.Qc7#
      • 1...Kb3!
  • Keys
    • 1.Rg4!
      • 1...Kc1
        • 2.Rc4#
      • 1...Kb3
        • 2.Qxd1#
      • 1...Kd3
        • 2.Qe4#
      • 1...Bxg4
        • 2.Qb1#
      • 1...Be2
        • 2.Qb1#
      • 1...Bf3
        • 2.Qb1#

Anticipated by 5010(1897)

This anticipates 64315(1945), 170891(1954)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINB(a)::QAR(C)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR(C)
      • Vars
        • B(a);OGATE::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(a)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(C)
      • Refutation
        • B(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR2(C)
      • Refutation
        • B(a);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(B)
      • K(b);S_FLIGHT::QAB(C),XB(a)
      • K(b);S_FLIGHT::QAB1(C)
      • B(a);OGATE,XR(B)::QAB1(C)
      • B(a);OGATE::QAB1(C)
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