MESON Chess Problem Database

Problem Display
PID: 79338 (4n3/4rp2/1Np1p3/PPkBB3/5Kp1/3p1bQ1/4RP2/1R6 w - - 0 1)

Goset, Alain

1st Prize, Themes-64 TT, 1971

4n3/4rp2/1Np1p3/PPkBB3/5Kp1/3p1bQ1/4RP2/1R6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Qe3#
    • 1...Bxe2
      • 2.Qe3#
    • 1...Bg2
      • 2.Qe3#
    • 1...Be4
      • 2.Qe3#
    • 1...Bxd5
      • 2.Qe3#
  • Tries
    • 1.Reb2?
      • threat
        • 2.Rc1#
      • 1...Bxd5
        • 2.Qe3#
      • 1...Bd1
        • 2.Qe3#
      • 1...d2
        • 2.Rc2#
      • 1...Sd6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rc4#
      • 1...Bxe4
        • 2.Qe3#
      • 1...cxb5
        • 2.Rc1#
      • 1...cxd5
        • 2.Sa4#
      • 1...exd5
        • 2.Sa4#
      • 1...Sd6
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(b);OGATE::QAB(D)
    • B(b);OGATE,XR(B)::QAB(D)
    • B(b);OGATE,XB(H)::QAB(D)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(A)
      • Vars
        • B(b);OGATE,XB(H)::QAB(D)
        • B(b);OGATE::QAB(D)
        • P(a);N_GUARD::R(B)
      • Refutation
        • S(i);
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • B(b);OGATE,XR(B)::QAB(D)
      • P(e);SBLOCK,XP(G)::R(A)
      • P(e);SBLOCK,XB(H)::S(J)
      • P(f);SBLOCK,XB(H)::S(J)
      • S(i);SBLOCK::B(I)
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