MESON Chess Problem Database

Problem Display
PID: 31190 (8/6B1/8/1K3B2/8/8/kP5Q/4n3 w - - 0 1)

Trcala, Stanislav

Sport a hry, 1904

8/6B1/8/1K3B2/8/8/kP5Q/4n3

#2

5 + 2

3437 Stanislav Trcala Sachovy odkaz 1999
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.b3#
      • 2.b4#
    • 1...Kb3
      • 2.Be6#
  • Tries
    • 1.Qg1?
      • 1...Ka1
        • 2.Qa7#
      • 1...Sc2
        • 2.Be6#
      • 1...Sg2
        • 2.Be6#
      • 1...Sd3
        • 2.Be6#
      • 1...Sf3
        • 2.Be6#
      • 1...Kb3!
  • Keys
    • 1.Qh1!
      • 1...Ka1
        • 2.Qa8#
      • 1...Kb3
        • 2.Qd5#
      • 1...Sc2
        • 2.Be6#
      • 1...Sg2
        • 2.Be6#
      • 1...Sd3
        • 2.Be6#
      • 1...Sf3
        • 2.Be6#

This anticipates 185874(1957)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(D)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT,P_SPINS(a)::QAR(B)
        • S(a);::B(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::QAB(B)
      • K(b);S_FLIGHT::QAB(B)
      • S(a);::B(D)
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