MESON Chess Problem Database

Problem Display
PID: 110536 (8/p7/2Q5/k7/1p6/1K6/8/8 w - - 0 1)

Jakab, Arpad

Chess Amateur (The), 1921

8/p7/2Q5/k7/1p6/1K6/8/8

#2

2 + 3

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...a6
      • 2.Qc5#
  • Tries
    • 1.Qc4?
      • 1...a6
        • 2.Qxb4#
        • 2.Qc5#
      • 1...Kb6!
    • 1.Qd6?
      • 1...a6
        • 2.Qxb4#
        • 2.Qc5#
      • 1...Kb5!
  • Keys
    • 1.Qb7!
      • 1...a6
        • 2.Qxb4#

This anticipates 171332(1994)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(B)
  • Tries
    • Try
      • Q(B);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • P(c);SBLOCK::QAB1(B),XP(a)
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