MESON Chess Problem Database

Problem Display
PID: 99635 (8/8/8/8/8/6KQ/8/4n1k1 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1925

8/8/8/8/8/6KQ/8/4n1k1

#2

2 + 2

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qg2#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sd3
      • 2.Qg2#
    • 1...Sf3
      • 2.Qg2#
  • Keys
    • 1.Qh2+!
      • 1...Kf1
        • 2.Qf2#

This anticipates 79801(1967)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
  • Actual
    • Q(B);CHECK
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
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