MESON Chess Problem Database

Problem Display
PID: 154082 (b4N2/b4p2/5p2/R2prk1p/6pK/1p1PR3/2Q2P1B/3N1B2 w - - 0 1)

Doudon, Max

diagrammes, 1974

b4N2/b4p2/5p2/R2prk1p/6pK/1p1PR3/2Q2P1B/3N1B2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.dxe4#
    • 1...g3
      • 2.Rf3#
    • 1...d4
      • 2.Qc8#
  • Tries
    • 1.d4+?
      • 1...Re4
        • 2.Qxe4#
      • 1...bxc2!
  • Keys
    • 1.Rf3+!
      • 1...gxf3
        • 2.Bh3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);OGATE,P_SPINP(c)::P(F),XR(d)
    • P(b);N_GUARD::R(G)
    • P(c);P_SPINR(d)::QAB(C)
  • Tries
    • Try
      • P(F);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINP(c),P_SPINR(d)::QAB1(C),XR(d)
      • Refutation
        • P(a);XQ(C)
  • Actual
    • R(G);CHECK
    • Vars
      • P(b);XR(G)::B(B)
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