MESON Chess Problem Database

Problem Display
PID: 80703 (8/5p2/8/1P2rR1b/KNkP4/2p1rR1Q/2N5/2n1B1b1 w - - 0 1)

Boyer, Jean-Pierre

Liberte-Dimanche, 1975

8/5p2/8/1P2rR1b/KNkP4/2p1rR1Q/2N5/2n1B1b1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe1
      • 2.Rxc3#
    • 1...Re2
      • 2.Rxc3#
    • 1...R3e4
      • 2.Rxc3#
    • 1...R5e4
      • 2.Rc5#
    • 1...Rc5
      • 2.Rxc5#
    • 1...Re6
      • 2.Rc5#
    • 1...Re7
      • 2.Rc5#
    • 1...Re8
      • 2.Rc5#
  • Tries
    • 1.R3f4?
      • threat
        • 2.Sa3#
      • 1...R3e4
        • 2.Qxc3#
      • 1...R5e4
        • 2.Rc5#
      • 1...Bd1!
    • 1.Qg4?
      • threat
        • 2.Sa3#
      • 1...R3e4
        • 2.Rxc3#
      • 1...R5e4
        • 2.Rc5#
      • 1...Bxg4!
    • 1.Qh4?
      • threat
        • 2.Sa3#
      • 1...R3e4
        • 2.Rxc3#
      • 1...R5e4
        • 2.Rc5#
      • 1...Bg4!
  • Keys
    • 1.R5f4!
      • threat
        • 2.Sa3#
      • 1...R3e4
        • 2.Rxc3#
      • 1...R5e4
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(d);OGATE,XB(A)::R1(C),XP(c)
    • R(d);OGATE::R1(C),XP(c)
    • R(f);OGATE::R1(I)
    • R(f);OGATE::R1(I),XR(f)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • R(d);OGATE::QAR1(D),XP(c)
        • R(f);OGATE::R1(I)
      • Refutation
        • B(g);P_PINS(B)
    • Try
      • Q(D);
      • Threat
        • S(B)
      • Vars
        • R(d);OGATE::R1(C),XP(c)
        • R(f);OGATE::R1(I)
      • Refutation
        • B(g);XQ(D)
    • Try
      • Q(D);
      • Threat
        • S(B)
      • Vars
        • R(d);OGATE::R1(C),XP(c)
        • R(f);OGATE::R1(I)
      • Refutation
        • B(g);
  • Actual
    • R(I);
    • Threat
      • S(B)
    • Vars
      • R(d);OGATE::R1(C),XP(c)
      • R(f);N_GUARD::QAR(D)
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