MESON Chess Problem Database

Problem Display
PID: 189639 (8/8/p7/P2p4/kP1R2P1/8/2P5/1K3Q2 w - - 0 1)

Erdey, Aladar

Magyar Sakkvilag, 1911

8/8/p7/P2p4/kP1R2P1/8/2P5/1K3Q2

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qc4?
      • 1...Ka3
        • 2.Qa2#
        • 2.Qb3#
      • 1...dxc4!
    • 1.Qe1?
      • 1...Kb5
        • 2.Qe8#
      • 1...Ka3!
    • 1.Qf5?
      • 1...Kb5
        • 2.Qd7#
      • 1...Ka3!
    • 1.Qf7?
      • 1...Kb5
        • 2.Qe8#
        • 2.Qd7#
      • 1...Ka3!
    • 1.b5+?
      • 1...Ka3
        • 2.Qd3#
        • 2.Qh3#
        • 2.Qc1#
        • 2.Qf3#
        • 2.Qf8#
      • 1...Kxa5!
  • Keys
    • 1.Qf8!
      • 1...Ka3
        • 2.b5#
      • 1...Kb5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(G)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAB(B)+P(D)
      • K(a);S_FLIGHT::QAB(B)
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Developed and maintained by Brian Stephenson.
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