MESON Chess Problem Database

Problem Display
PID: 179227 (2Q1R3/1p2B3/2p1NP2/R1bP1NK1/n3kP2/1q4p1/1p1PB3/8 w - - 0 1)

Caillaud, Michel

Robert, Philippe

Phenix, 2016

2Q1R3/1p2B3/2p1NP2/R1bP1NK1/n3kP2/1q4p1/1p1PB3/8

#2

12 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sd6#
    • 1...Bf2
      • 2.Sd6#
    • 1...Be3
      • 2.Sxg3#
      • 2.Sd6#
    • 1...Bd4
      • 2.Sd6#
    • 1...Bb6
      • 2.Sd6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Ba7
      • 2.Sd6#
  • Tries
    • 1.Sxg3+?
      • 1...Kxd5
        • 2.Rd8#
        • 2.Qd7#
      • 1...Qxg3+!
    • 1.Sxc5+?
      • 1...Kxd5
        • 2.Rd8#
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qd8#
      • 1...Sxc5!
    • 1.Bd6?
      • threat
        • 2.Sc7#
      • 1...Kxd5
        • 2.Sc7#
      • 1...Qxd5
        • 2.Sxc5#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Bd4
        • 2.Sexd4#
      • 1...Qc3!
    • 1.d3+?
      • 1...Kxd5
        • 2.Se3#
        • 2.Sc7#
        • 2.Bf3#
        • 2.Rd8#
        • 2.Qd7#
      • 1...Qxd3!
  • Keys
    • 1.Sed4!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Qe6#
      • 1...Qxd5
        • 2.d3#
      • 1...Bxd4
        • 2.Sd6#
      • 1...Bd6
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD::S(F)
    • B(f);N_GUARD::S(F),XB(f)
  • Tries
    • Try
      • S(F);CHECK,XP(c)
      • Refutation
        • Q(b);CHECK,XS(F)
    • Try
      • S(H);CHECK,XB(f)
      • Refutation
        • S(d);XS(H)
    • Try
      • B(J);
      • Threat
        • R(L)+S(H)
      • Vars
        • K(e);P_SPINB(f),S_FLIGHT,XP(E)::S(H)
        • Q(b);P_PINS(F),SBLOCK,XP(E)::R(L)+S(H),DCHECK,XB(f)
        • B(f);XB(J)::S(F),XB(f)
        • B(f);::R(L)+S(H),XB(f)
      • Refutation
        • Q(b);
    • Try
      • P(A);CHECK
      • Refutation
        • Q(b);XP(A)
  • Actual
    • S(H);
    • Threat
      • QAR2(K)
    • Vars
      • K(e);P_SPINB(f),S_FLIGHT,XP(E)::QAB1(K)
      • Q(b);N_GUARD,P_PINS(F),SBLOCK,XP(E)::P(A)
      • B(f);N_GUARD,SBLOCK,XS(H)::S(F)
      • B(f);::R(L)+B(J),XB(f)
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