MESON Chess Problem Database

Problem Display
PID: 178544 (n7/5BKb/8/B3kpp1/Q3Np1N/3pr3/8/b7 w - - 0 1)

Viksna, Kristaps

Busmen's Chess Review, 1968

n7/5BKb/8/B3kpp1/Q3Np1N/3pr3/8/b7

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sf3#
    • 1...Re2
      • 2.Sf3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Bc3
      • 2.Bxc3#
    • 1...Bd4
      • 2.Qe8#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bg8
      • 2.Sg6#
    • 1...Sc7
      • 2.Bxc7#
  • Tries
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxe4+!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Bd6#
      • 1...Kxe4+
        • 2.Bc3#
      • 1...Kd4
        • 2.Bc3#
        • 2.Bd6#
      • 1...Rxe4
        • 2.Sf3#
      • 1...fxe4
        • 2.Qxa1#
      • 1...Bd4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::S(C)
    • R(c);N_GUARD::S(C),XR(c)
    • B(a);N_GUARD::B(D),XB(a)
    • B(a);SBLOCK::QAR(A)
    • B(h);N_GUARD::S(C),XB(h)
    • B(h);N_GUARD::S(C)
    • S(i);N_GUARD::B(D),XS(i)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(A)
      • Refutation
        • K(e);CHECK,P-FLIGHT,XS(B)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • K(e);CHECK,P-FLIGHT,XS(B)::QAR(A)+B(D)
      • R(c);N_GUARD,SBLOCK,XS(B)::S(C)
      • P(f);SBLOCK,XS(B)::QAB(A),XB(a)
      • B(a);SBLOCK::QAR(A)
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