MESON Chess Problem Database

Problem Display
PID: 87465 (K2QN1r1/4p3/1R4p1/3Pp3/P2pkPB1/R4p1N/1p3P2/8 w - - 0 1)

Chandrasekaran, KR

The Problemist, 1996

K2QN1r1/4p3/1R4p1/3Pp3/P2pkPB1/R4p1N/1p3P2/8

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Rb4#
    • 1...exf4
      • 2.Re6#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Rxf3?
      • threat
        • 2.Sg5#
      • 1...exf4
        • 2.Re6#
      • 1...d3
        • 2.Rb4#
      • 1...g5!
    • 1.Rf6?
      • threat
        • 2.Sg5#
        • 2.Bxf3#
      • 1...exf4
        • 2.Re6#
      • 1...exf6
        • 2.Sxf6#
      • 1...g5
        • 2.Bxf3#
        • 2.Bf5#
      • 1...d3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Bxf3#
      • 1...Kxd5
        • 2.Qc6#
      • 1...exf4
        • 2.Qe6#
      • 1...d3
        • 2.Qc4#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::R(H)
    • P(e);OGATEB,XP(E)::R(H)
    • P(g);N_GUARD::S(K)
  • Tries
    • Try
      • R(B);XP(b)
      • Threat
        • S(C)
      • Vars
        • P(e);OGATEB,XP(E)::R(H)
        • P(c);OGATEB::R(H)
      • Refutation
        • P(f);
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATEB,XP(E)::R(H)
        • P(g);XR(H)::S(K),XP(g)
      • Refutation
        • P(c);
  • Actual
    • Q(J);
    • Threat
      • B(F),XP(b)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XP(G)::QAB1(J)
      • P(e);OGATEB,XP(E)::QAR2(J)
      • P(c);OGATEB::QAR2(J)
      • P(g);N_GUARD::S(K)
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