MESON Chess Problem Database

Problem Display
PID: 107727 (1QR2R2/2Nn4/1pb3r1/2P4n/1p1k4/1B3P2/3K1N1B/8 w - - 0 1)

Benoit, Marc

CCLA Bulletin, 1938

1QR2R2/2Nn4/1pb3r1/2P4n/1p1k4/1B3P2/3K1N1B/8

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Se6#
    • 1...Rg2
      • 2.Se6#
    • 1...Rg3
      • 2.Se6#
    • 1...Rg4
      • 2.Se6#
    • 1...Rg5
      • 2.Se6#
    • 1...Re6
      • 2.Sxe6#
    • 1...Rg7
      • 2.Se6#
    • 1...Rg8
      • 2.Se6#
    • 1...Bxf3
      • 2.Sb5#
    • 1...Be4
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bd5
      • 2.Sb5#
    • 1...Bb7
      • 2.Sb5#
    • 1...Ba8
      • 2.Sb5#
    • 1...Shf6
      • 2.Se6#
    • 1...Sdf6
      • 2.Se6#
  • Tries
    • 1.Rf4+?
      • 1...Kxc5
        • 2.Rc4#
      • 1...Ke5
        • 2.Sd3#
      • 1...Be4
        • 2.Sb5#
      • 1...Sxf4!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Sg4#
      • 1...Kxc5
        • 2.Se4#
      • 1...Ke5
        • 2.Sd3#
      • 1...Rxg1
        • 2.Se6#
      • 1...Bxf3
        • 2.Sb5#
      • 1...Rg2
        • 2.Se6#
      • 1...Rg3
        • 2.Se6#
      • 1...Rg4
        • 2.Sxg4#
        • 2.Se6#
      • 1...Re6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(f);N_GUARD::S(G)
    • R(f);N_GUARD,P_PINS(B)::S(G)
    • R(f);N_GUARD::S(G),XR(f)
    • B(e);N_GUARD,XP(E)::S(G)
    • B(e);N_GUARD::S(G)
    • B(e);N_GUARD::S(G),XB(e)
    • S(c);S_CUTR(f)::S(G)
    • S(g);S_CUTR(f)::S(G)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(F)::R1(J)
        • K(b);S_FLIGHT::S(B)
        • B(e);P_SPINB(e)::S(G)
      • Refutation
        • S(c);XR(J)
  • Actual
    • B(C);
    • Threat
      • B(C)+S(B)
    • Vars
      • K(b);S_FLIGHT,XP(F)::B(C)+S(B),DCHECK
      • K(b);S_FLIGHT::S(B)
      • R(f);N_GUARD,XB(C)::S(G)
      • B(e);N_GUARD,XP(E)::S(G)
      • R(f);N_GUARD,P_PINS(B)::S(G)
      • R(f);N_GUARD::S(G)
      • R(f);N_GUARD::S(G),XR(f)
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