MESON Chess Problem Database

Problem Display
PID: 133949 (Q7/4p3/3RnRp1/4k1n1/2K5/8/2B5/4B3 w - - 0 1)

Sikdar, Niharendu

The Field, 1963

(First published on Thu Jan 3 1963)

Q7/4p3/3RnRp1/4k1n1/2K5/8/2B5/4B3

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Rdxe6#
    • 1...Sh3
      • 2.Rdxe6#
    • 1...Se4
      • 2.Rdxe6#
    • 1...Sf7
      • 2.Rdxe6#
    • 1...Sh7
      • 2.Rdxe6#
    • 1...Sd4
      • 2.Bg3#
      • 2.Qd5#
    • 1...Sf4
      • 2.Bc3#
      • 2.Qa1#
    • 1...Sc5
      • 2.Bc3#
      • 2.Bg3#
      • 2.Qd5#
      • 2.Qa1#
    • 1...Sc7
      • 2.Bc3#
      • 2.Bg3#
      • 2.Qa1#
    • 1...Sg7
      • 2.Bc3#
      • 2.Bg3#
      • 2.Qd5#
      • 2.Qa1#
      • 2.Qa5#
    • 1...Sd8
      • 2.Bc3#
      • 2.Bg3#
      • 2.Qd5#
      • 2.Qa1#
      • 2.Qa5#
    • 1...Sf8
      • 2.Bc3#
      • 2.Bg3#
      • 2.Qd5#
      • 2.Qa1#
      • 2.Qa5#
  • Tries
    • 1.Bc3+?
      • 1...Sd4
        • 2.Bxd4#
        • 2.Qd5#
        • 2.Qa5#
      • 1...Kxd6!
    • 1.Bg3+?
      • 1...Sf4
        • 2.Bxf4#
        • 2.Qd5#
        • 2.Qa1#
        • 2.Qa5#
      • 1...Kxf6!
    • 1.Qa1+?
      • 1...Sd4
        • 2.Bg3#
        • 2.Qxd4#
      • 1...Kxd6!
  • Keys
    • 1.Qe8!
      • 1...Kxd6
        • 2.Bg3#
      • 1...Kxf6
        • 2.Bc3#
      • 1...exd6
        • 2.Bc3#
      • 1...exf6
        • 2.Bg3#
      • 1...Sf3
        • 2.Rdxe6#
      • 1...Sh3
        • 2.Rdxe6#
      • 1...Se4
        • 2.Rdxe6#
      • 1...Sf7
        • 2.Rdxe6#
      • 1...Sh7
        • 2.Rdxe6#
      • 1...Sd4
        • 2.Bg3#
      • 1...Sf4
        • 2.Bc3#
      • 1...Sc5
        • 2.Bc3#
        • 2.Bg3#
      • 1...Sc7
        • 2.Bc3#
        • 2.Bg3#
      • 1...Sg7
        • 2.Bc3#
        • 2.Bg3#
        • 2.Qb5#
      • 1...Sd8
        • 2.Bc3#
        • 2.Bg3#
        • 2.Qb5#
      • 1...Sf8
        • 2.Bc3#
        • 2.Bg3#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R1(D),XS(c)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(a);P_SPINS(c),S_FLIGHT,XR(D)
    • Try
      • B(A);CHECK
      • Refutation
        • K(a);P_SPINS(c),S_FLIGHT,XR(E)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P_SPINS(c),S_FLIGHT,XR(D)
  • Actual
    • Q(F);
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT,XR(D)::B(A)
      • K(a);P_SPINS(c),S_FLIGHT,XR(E)::B(A)
      • P(e);P_SPINS(c),SBLOCK,XR(D)::B(A)
      • P(e);P_SPINS(c),SBLOCK,XR(E)::B(A)
      • S(b);N_GUARD::R1(D),XS(c)
      • S(c);N_GUARD,P_SPINP(e)::B(A)
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