MESON Chess Problem Database

Problem Display
PID: 869 (5K2/p4p2/2nQ4/2r3p1/6k1/q2bR1N1/2p1N3/3B3R w - - 0 1)

Hannelius, Jan Ingvar

British Chess Magazine, 1993

5K2/p4p2/2nQ4/2r3p1/6k1/q2bR1N1/2p1N3/3B3R

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe2
      • 2.Bxe2#
  • Tries
    • 1.Qd4+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Sxd4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sh6#
      • 1...Kxf5
        • 2.Sg3#
      • 1...Rxf5
        • 2.Rg3#
      • 1...Bxf5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE,P_SPINB(c),XS(C)::B(A),XB(c)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR2(F),XB(c)
      • Refutation
        • S(g);XQ(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT,XS(E)::S(C)
      • R(e);P_PINQ(F),SBLOCK,XS(E)::R1(D)
      • B(c);SBLOCK,XS(E)::QAR1(F)
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