MESON Chess Problem Database

Problem Display
PID: 133913 (8/2PPk3/1Pn1B3/5P2/3B2NK/b7/7Q/8 w - - 0 1)

Sikdar, Niharendu

The Field, 1962

(First published on Thu Sep 27 1962)

8/2PPk3/1Pn1B3/5P2/3B2NK/b7/7Q/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Bc5#
    • 1...Bb2
      • 2.Bc5#
    • 1...Bc5
      • 2.Bxc5#
    • 1...Sb4
      • 2.Bc5#
      • 2.d8Q#
    • 1...Sxd4
      • 2.d8Q#
    • 1...Sa5
      • 2.d8Q#
    • 1...Se5
      • 2.d8Q#
    • 1...Sa7
      • 2.d8Q#
    • 1...Sb8
      • 2.d8Q#
  • Tries
    • 1.Qd6+?
      • 1...Kxd6
        • 2.c8S#
      • 1...Bxd6!
    • 1.c8Q?
      • threat
        • 2.Bf6#
        • 2.Qe8#
      • 1...Sxd4
        • 2.Qe8#
        • 2.d8Q#
      • 1...Se5
        • 2.d8Q#
      • 1...Bb2
        • 2.Bc5#
        • 2.Qe8#
      • 1...Sd8!
    • 1.c8S+?
      • 1...Kd8
        • 2.Qc7#
      • 1...Kf8!
    • 1.c8R?
      • threat
        • 2.Bf6#
        • 2.Re8#
      • 1...Sxd4
        • 2.Re8#
        • 2.d8Q#
      • 1...Se5
        • 2.d8Q#
      • 1...Bb2
        • 2.Bc5#
        • 2.Re8#
      • 1...Sd8!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sg6#
      • 1...Kd6
        • 2.c8S#
      • 1...Kf6
        • 2.Sxc6#
      • 1...Kf8
        • 2.Sg6#
      • 1...Sxd4
        • 2.d8Q#
      • 1...Sxe5
        • 2.d8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
    • S(b);N_GUARD,XB(B)::P=Q
    • S(b);N_GUARD::P=Q
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XQ(A)::P=S
      • Refutation
        • B(a);XQ(A)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::P=Q
      • Refutation
        • S(b);
    • Try
      • P(H);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::P=Q
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(c);S_FLIGHT::P=S
      • K(c);S_FLIGHT::B(B)+S(C),XS(b)
      • K(c);S_FLIGHT::S(C)
      • S(b);N_GUARD,XB(B)::P=Q
      • S(b);N_GUARD,XS(C)::P=Q
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