MESON Chess Problem Database

Problem Display
PID: 78702 (1Q6/5b2/4pr2/8/p2Nk1nP/R1K1P2R/B5P1/8 w - - 0 1)

Diot, Roger

L'Echiquier de Paris, 1955

1Q6/5b2/4pr2/8/p2Nk1nP/R1K1P2R/B5P1/8

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rg6
      • 2.Qf4#
    • 1...Rh6
      • 2.Qf4#
    • 1...e5
      • 2.Qb1#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qf4#
      • 1...Kxf5
        • 2.Bb1#
      • 1...Rxf5
        • 2.Rxa4#
      • 1...Sxe3
        • 2.Sg3#
      • 1...Se5
        • 2.Sd6#
      • 1...e5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD::QAR1(I),XR(e)
    • R(e);N_GUARD::QAR1(I)
    • P(d);SBLOCK::QAB(I)
  • Actual
    • S(G);
    • Threat
      • QAR1(I)
    • Vars
      • K(b);S_FLIGHT,XS(G)::B(A)
      • R(e);SBLOCK,XS(G)::R(C),XP(a)
      • S(c);SBLOCK,XP(E)::S(G)
      • S(c);SBLOCK::S(G)
      • P(d);SBLOCK::QAB(I)
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