MESON Chess Problem Database

Problem Display
PID: 205525 (8/8/8/8/2K1p3/1Np5/1pk5/5Q2 w - - 0 1)

Pape, Edouard

L'Echiquier Marseillais, 1925

8/8/8/8/2K1p3/1Np5/1pk5/5Q2

#2

3 + 4

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...b1Q
      • 2.Qe2#
    • 1...b1S
      • 2.Qc1#
    • 1...b1B
      • 2.Qe2#
      • 2.Qc1#
    • 1...b1R
      • 2.Qe2#
    • 1...e3
      • 2.Qd3#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sd4#
      • 1...b1Q
        • 2.Qe2#
      • 1...b1S
        • 2.Qc1#
      • 1...b1B
        • 2.Qc1#
        • 2.Qe2#
      • 1...b1R
        • 2.Qe2#

This anticipates 140870(1980/2)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(a);SBLOCK::QAR2(A)
    • P(a);N_GUARD::QAR1(A)
    • P(d);N_GUARD::QAB1(A)
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • P(a);SBLOCK::QAR2(A)
      • P(a);N_GUARD::QAR1(A)
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