MESON Chess Problem Database

Problem Display
PID: 103133 (4nR2/5K1k/2ppN2p/3pb1B1/6P1/4P2n/8/1R5Q w - - 0 1)

Maillard, Richard

Bulletin de la FFE, 1936

4nR2/5K1k/2ppN2p/3pb1B1/6P1/4P2n/8/1R5Q

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Qxh6#
    • 1...Sf2
      • 2.Qxh6#
    • 1...Sf4
      • 2.Qxh6#
    • 1...Sxg5+
      • 2.Sxg5#
    • 1...d4
      • 2.Qe4#
    • 1...hxg5
      • 2.Qxh3#
  • Tries
    • 1.Rg8?
      • threat
        • 2.Sf8#
      • 1...Sxg5+
        • 2.Sxg5#
      • 1...hxg5
        • 2.Qxh3#
      • 1...Bg7!
    • 1.Rh8+?
      • 1...Bxh8
        • 2.Sf8#
      • 1...Kxh8!
    • 1.Qxh3?
      • threat
        • 2.Qxh6#
      • 1...h5
        • 2.Qxh5#
      • 1...Bg7!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Qb1#
      • 1...Sxg5+
        • 2.Sxg5#
      • 1...hxg5
        • 2.Qxh3#
      • 1...Sg1
        • 2.Qxh6#
      • 1...Sf2
        • 2.Qxh6#
      • 1...Sf4
        • 2.Qxh6#
      • 1...Sf6
        • 2.Rh8#
      • 1...Sg7
        • 2.Rh8#
      • 1...d4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,P_SPINP(f)::QAR1(B),XP(f)
    • S(a);CHECK,P_SPINP(f),XB(E)::S(F),XS(a)
    • P(b);N_GUARD::QAB(B)
    • P(f);OGATEB,P_SPINS(a),XB(E)::QAR(B),XS(a)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(F)
      • Vars
        • S(a);CHECK,P_SPINP(f),XB(E)::S(F),XS(a)
        • P(f);OGATEB,P_SPINS(a),XB(E)::QAR(B),XS(a)
      • Refutation
        • B(c);
    • Try
      • R(H);CHECK
      • Vars
        • B(c);SBLOCK,XR(H)::S(F)
      • Refutation
        • K(g);P-FLIGHT,XR(H)
    • Try
      • Q(B);P_PINP(f),XS(a)
      • Threat
        • QAR1(B),XP(f)
      • Vars
        • P(f);OGATEB::QAR2(B),XP(f)
      • Refutation
        • B(c);
  • Actual
    • R(A);
    • Threat
      • QAB(B)
    • Vars
      • S(a);CHECK,P_SPINP(f),XB(E)::S(F),XS(a)
      • P(f);OGATEB,P_SPINS(a),XB(E)::QAR(B),XS(a)
      • S(a);OGATE,P_SPINP(f)::QAR1(B),XP(f)
      • S(h);S_CUTB(c)::R1(H)
      • P(b);N_GUARD::QAB(B)
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Developed and maintained by Brian Stephenson.
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