MESON Chess Problem Database

Problem Display
PID: 46401 (K7/8/1R6/1N6/8/8/n7/knQ5 w - - 0 1)

Hernitz, Zvonimir

StrateGems, 2003

K7/8/1R6/1N6/8/8/n7/knQ5

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sc2#
        • 2.Rxb1#
        • 2.Qb2#
        • 2.Qxb1#
      • 1...Sc3
        • 2.Qb2#
      • 1...Sb4
        • 2.Qxb1#
      • 1...Sxc1!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Rxb1#
        • 2.Qb2#
        • 2.Qxb1#
      • 1...Sxc1
        • 2.Rxb1#
      • 1...Sxc3
        • 2.Qb2#
      • 1...Sb4
        • 2.Qxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(4)
      • Vars
        • S(c);::QAB1(A)
        • S(c);::QAR1(A),XS(b)
      • Refutation
        • S(c);N_SPINS(b),XQ(A)
  • Actual
    • S(B);
    • Threat
      • DUALS(3)
    • Vars
      • S(c);N_SPINS(b),XQ(A)::R1(C),XS(b)
      • S(c);XS(B)::QAB1(A)
      • S(c);::QAR1(A),XS(b)
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