MESON Chess Problem Database

Problem Display
PID: 48914 (8/5B1K/7N/4BNk1/6p1/P1p1R2b/7r/2Q4r w - - 0 1)

Fontaine, Leon

Het Belgisch Schaakbord (L'Echiquier Belge), 1948

8/5B1K/7N/4BNk1/6p1/P1p1R2b/7r/2Q4r

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Re2#
    • 1...Bg2
      • 2.Re1#
    • 1...g3
      • 2.Rxg3#
  • Tries
    • 1.Bf4+?
      • 1...Kf6
        • 2.Re6#
        • 2.Qxc3#
      • 1...Kxf4!
    • 1.Bf6+?
      • 1...Kxf6
        • 2.Re6#
      • 1...Kf4!
    • 1.Rxc3+?
      • 1...Rd2
        • 2.Qxd2#
      • 1...Rxc1!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Sf7#
      • 1...Bf1
        • 2.Re2#
      • 1...Bg2
        • 2.Re1#
      • 1...g3
        • 2.Rxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);P_PINS(F),S_CUTR(a)::QAB(A)+R(C)
    • B(d);P_PINS(F),S_CUTR(b)::QAB(A)+R(C)
    • P(e);::QAB(A)+R(C),DCHECK,XP(e)
  • Tries
    • Try
      • B(D);CHECK
      • Refutation
        • K(f);S_FLIGHT,XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • K(f);S_FLIGHT,XB(D)::R1(C)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(C);CHECK,XP(c)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB(A),XR(b)
      • Refutation
        • R(a);XQ(A)
  • Actual
    • B(G);
    • Threat
      • S(F)
    • Vars
      • B(d);P_PINS(F),S_CUTR(a)::QAB(A)+R(C)
      • B(d);P_PINS(F),S_CUTR(b)::QAB(A)+R(C)
      • P(e);::QAB(A)+R(C),DCHECK,XP(e)
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