MESON Chess Problem Database

Problem Display
PID: 173892 (6qk/6p1/4p1P1/8/R3Q1p1/4Kp2/B7/8 w - - 0 1)

Pachl, Franz

Comm., Boletim da UBP, 1984-1985

6qk/6p1/4p1P1/8/R3Q1p1/4Kp2/B7/8

#2

5 + 6

1077 Boletim da UBP 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.Rxa8#
      • 2.Qxa8#
  • Tries
    • 1.Qa8?
      • 1...Qxa8
        • 2.Rxa8#
      • 1...Qb8
        • 2.Qxb8#
      • 1...Qc8
        • 2.Qxc8#
      • 1...Qd8
        • 2.Qxd8#
      • 1...Qe8
        • 2.Qxe8#
      • 1...Qf8
        • 2.Qxf8#
      • 1...g3
        • 2.Rh4#
      • 1...e5
        • 2.Qxg8#
      • 1...f2!
  • Keys
    • 1.Ra8!
      • 1...Qxa8
        • 2.Qxa8#
      • 1...Qb8
        • 2.Rxb8#
      • 1...Qc8
        • 2.Rxc8#
      • 1...Qd8
        • 2.Rxd8#
      • 1...Qe8
        • 2.Rxe8#
      • 1...Qf8
        • 2.Rxf8#
      • 1...f2
        • 2.Qh1#
      • 1...g3
        • 2.Qh4#
      • 1...e5
        • 2.Rxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);P_PINQ(e)
      • Vars
        • Q(e);N_SPINQ(e),OGATE,XQ(D)::R(C),XQ(e)
        • Q(e);OGATEB::QAR(D),XQ(e)
        • Q(e);OGATEB::QAR2(D),XQ(e)
        • P(b);OGATE::R(C)
        • P(c);::QAR1(D),XQ(e)
      • Refutation
        • P(a);
  • Actual
    • R(C);P_PINQ(e)
    • Vars
      • Q(e);N_SPINQ(e),OGATE,XR(C)::QAB1(D),XQ(e)
      • Q(e);OGATEB::R(C),XQ(e)
      • P(a);OGATE::QAB(D)
      • P(b);OGATE::QAR(D)
      • P(c);::R1(C),XQ(e)
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