MESON Chess Problem Database

Problem Display
PID: 40976 (6K1/3p4/1B1p1p2/2Pk1pn1/3N1P2/n2P2p1/b1N2b2/4Q3 w - - 0 1)

Bantysh, Nikolai Ivanovich

The Problemist, 2002

6K1/3p4/1B1p1p2/2Pk1pn1/3N1P2/n2P2p1/b1N2b2/4Q3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Sb4#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qa8#
      • 1...Sxc2
        • 2.c6#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bxd4!
    • 1.Qe8?
      • threat
        • 2.Qa8#
      • 1...Bxd4
        • 2.Sb4#
      • 1...dxc5
        • 2.Qxd7#
      • 1...Sxc2!
  • Keys
    • 1.c6!
      • threat
        • 2.Sb4#
      • 1...Bxe1
        • 2.Se3#
      • 1...Sxc2
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XS(D)::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(c);N_GUARD,XS(B)::QAR(A)+P(F)
        • P(h);OGATE,P_SPINP(h),XP(F)::QAR1(A),XP(h)
      • Refutation
        • B(b);XS(D)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • B(b);SBLOCK,XS(D)::S(B)
        • P(h);OGATEB,XP(F)::QAR2(A),XP(j)
      • Refutation
        • S(c);XS(B)
  • Actual
    • P(F);
    • Threat
      • S(B)
    • Vars
      • B(b);N_GUARD,XQ(A)::S(B)
      • S(c);N_GUARD,XS(B)::QAR(A)
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