MESON Chess Problem Database

Problem Display
PID: 145525 (2bQ4/2Rn4/1P3P2/Bp1p2N1/1N1kBP2/3p1R2/5K2/b3n3 w - - 0 1)

Lepage, Roger

diagrammes, 1974

2bQ4/2Rn4/1P3P2/Bp1p2N1/1N1kBP2/3p1R2/5K2/b3n3

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Rxd3#
    • 1...Sg2
      • 2.Rxd3#
    • 1...Se5
      • 2.Qxd5#
    • 1...Sxb6
      • 2.Bxb6#
    • 1...Sxf6
      • 2.Qxf6#
    • 1...Sb8
      • 2.Qxd5#
    • 1...Sf8
      • 2.Qxd5#
    • 1...dxe4
      • 2.Se6#
  • Tries
    • 1.Sc2+?
      • 1...Sxc2
        • 2.Rxd3#
      • 1...dxc2!
    • 1.Bf5?
      • threat
        • 2.Se6#
      • 1...Sxb6
        • 2.Bxb6#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Se5
        • 2.Qxd5#
      • 1...Sb8
        • 2.Qxd5#
      • 1...Sf8
        • 2.Qxd5#
      • 1...Sc5!
    • 1.Bg6?
      • threat
        • 2.Se6#
      • 1...Sxb6
        • 2.Bxb6#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Se5
        • 2.Qxd5#
      • 1...Sb8
        • 2.Qxd5#
      • 1...Sf8
        • 2.Qxd5#
      • 1...Sc5!
    • 1.Bh7?
      • threat
        • 2.Se6#
      • 1...Sxb6
        • 2.Bxb6#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Se5
        • 2.Qxd5#
      • 1...Sb8
        • 2.Qxd5#
      • 1...Sf8
        • 2.Qxd5#
      • 1...Sc5!
    • 1.Re3?
      • threat
        • 2.Se6#
      • 1...Sxb6
        • 2.Bxb6#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Se5
        • 2.Qxd5#
      • 1...Sb8
        • 2.Qxd5#
      • 1...Sf8
        • 2.Qxd5#
      • 1...Sc5!
  • Keys
    • 1.Bxd3!
      • threat
        • 2.Se6#
      • 1...Sxd3+
        • 2.Rxd3#
      • 1...Sxb6
        • 2.Bxb6#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Sc5
        • 2.Sc6#
      • 1...Se5
        • 2.Qxd5#
      • 1...Sb8
        • 2.Qxd5#
      • 1...Sf8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::R1(B),XP(c)
    • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
    • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
    • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
    • P(f);P_SPINS(g),SBLOCK,XB(D)::S(G)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(b);XS(C)::R1(B),XP(c)
      • Refutation
        • P(c);XS(C)
    • Try
      • B(D);
      • Threat
        • S(G)
      • Vars
        • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
        • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
        • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
      • Refutation
        • S(g);P_SPINP(f)
    • Try
      • B(D);
      • Threat
        • S(G)
      • Vars
        • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
        • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
        • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
      • Refutation
        • S(g);P_SPINP(f)
    • Try
      • B(D);
      • Threat
        • S(G)
      • Vars
        • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
        • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
        • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
      • Refutation
        • S(g);P_SPINP(f)
    • Try
      • R(B);
      • Threat
        • S(G)
      • Vars
        • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
        • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
        • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
      • Refutation
        • S(g);P_SPINP(f)
  • Actual
    • B(D);XP(c)
    • Threat
      • S(G)
    • Vars
      • S(b);CHECK,OGATE,XB(D)::R1(B),XS(b)
      • S(g);OGATE,P_SPINP(f),XP(H)::B(F),XS(g)
      • S(g);OGATE,P_SPINP(f),XP(I)::QAB(K),XS(g)
      • S(g);P_SPINP(f),SBLOCK::S(C)
      • S(g);OGATE,P_SPINP(f)::QAR1(K),XP(f)
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