MESON Chess Problem Database

Problem Display
PID: 76864 (1K6/8/4R3/k2p4/np6/R7/2P5/1Q6 w - - 0 1)

Havel, Miroslav

Besedy lidu, 1918

1K6/8/4R3/k2p4/np6/R7/2P5/1Q6

#2

5 + 4

6024 Bohemian Garnets 1923

SOLUTION

  • SOUND
  • Tries
    • 1.Rxa4+?
      • 1...Kb5
        • 2.Qxb4#
      • 1...Kxa4!
    • 1.Qe1?
      • 1...d4
        • 2.Qe5#
      • 1...Kb5!
    • 1.c3?
      • threat
        • 2.Qxb4#
      • 1...Kb5
        • 2.Qxb4#
      • 1...bxa3
        • 2.Qb4#
      • 1...bxc3
        • 2.Qb6#
      • 1...b3!
  • Keys
    • 1.c4!
      • 1...bxa3
        • 2.Qb5#
      • 1...dxc4
        • 2.Qf5#
      • 1...bxc4 ep
        • 2.Qb6#
      • 1...b3
        • 2.Qe1#
      • 1...d4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK,XS(a)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR1(A),XP(b)
      • Refutation
        • K(c);P-FLIGHT,XR(C)
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • P(d);OGATEB::QAR(A)
      • Refutation
        • K(c);N_SPINP(b),N_SPINS(a),P-FLIGHT
    • Try
      • P(B);
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT,P_SPINP(b)::QAR1(A),XP(b)
        • P(b);N_SPINS(a),XR(C)::QAB1(A)
        • P(b);OGATE,XP(B)::QAB1(A)
      • Refutation
        • P(b);
  • Actual
    • P(B);
    • Vars
      • P(b);N_SPINS(a),OGATE,XR(C)::QAR1(A)
      • P(d);OGATEB,XP(B)::QAR(A)
      • P(b);EP,OGATE,XP(B)::QAB1(A)
      • P(b);OGATEB::QAB(A)
      • P(d);OGATEB::QAR(A)
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