MESON Chess Problem Database

Problem Display
PID: 125106 (8/2nQ3K/3p4/2bppN2/1pkP3R/P1PrpB2/P2p2b1/3N4 w - - 0 1)

Segers, Marcel

Belliboni MT, 1993

8/2nQ3K/3p4/2bppN2/1pkP3R/P1PrpB2/P2p2b1/3N4

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sb2#
    • 1...Rxd4
      • 2.Be2#
    • 1...Bxd4
      • 2.Qc6#
    • 1...Bb6
      • 2.Sxd6#
    • 1...Ba7
      • 2.Sxd6#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sfxe3#
      • 1...Bxd4
        • 2.Qc6#
      • 1...Be4!
    • 1.dxe5+?
      • 1...Rd4
        • 2.Be2#
      • 1...Bd4
        • 2.Qc6#
      • 1...d4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sxd6#
      • 1...Rxc3
        • 2.Sb2#
      • 1...Rxd4
        • 2.Be2#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Se8
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);SBLOCK,XP(D)::S(A)
    • R(c);OGATEB,P_SPINR(c),XP(F)::B(E)
    • B(g);OGATEB,P_SPINB(g),XP(F)::QAR2(I)
    • B(g);N_GUARD::S(H),XP(j)
  • Tries
    • Try
      • B(E);P_PINR(c)
      • Threat
        • S(H),XP(d)
      • Vars
        • B(g);OGATEB,P_SPINB(g),XP(F)::QAR2(I)
      • Refutation
        • B(b);P_PINS(H)
    • Try
      • P(F);CHECK,XP(i)
      • Vars
        • R(c);P_SPINR(c),S_CUTB(b),S_CUTB(g),S_CUTP(h)::B(E)
        • B(g);P_SPINB(g),S_CUTP(h),S_CUTR(c)::QAR2(I)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • Q(I);P_PINB(g)
    • Threat
      • S(H),XP(j)
    • Vars
      • R(c);SBLOCK,XP(D)::S(A)
      • R(c);OGATEB,P_SPINR(c),XP(F)::B(E)
      • S(k);N_GUARD,SBLOCK::QAB1(I),XP(h)
      • S(k);N_GUARD::QAB(I)
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