MESON Chess Problem Database

Problem Display
PID: 15167 (1B3R2/2q4B/2PNr3/1n4Pp/Q2P1p1K/3pkp2/5RP1/7N w - - 0 1)

Keller, Michael

3rd HM., Szachy, 1980

1B3R2/2q4B/2PNr3/1n4Pp/Q2P1p1K/3pkp2/5RP1/7N

#2

12 + 8

4655 Michael Keller Ein Meister der Schachkomposition 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sf5#
    • 1...Sxd4
      • 2.Sc4#
  • Keys
    • 1.Rxf4!
      • threat
        • 2.R4xf3#
      • 1...Kxf4
        • 2.Rxf3#
      • 1...Qxc6
        • 2.Sf5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...fxg2
        • 2.Sc4#
        • 2.Sf5#
        • 2.R4f3#
      • 1...Qf7
        • 2.Sc4#
      • 1...Re4
        • 2.Rxe4#
      • 1...Rf6
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK::S(I)
    • S(e);SBLOCK,XP(E)::S(I)
  • Actual
    • R(L);XP(d)
    • Threat
      • R1(L),XP(c)
    • Vars
      • K(b);P_SPINP(c),S_FLIGHT,XR(L)::R1(B),XP(c)
      • Q(h);XP(H)::S(I)
      • S(e);OGATE,XP(E)::QAB1(D),XS(e)
      • Q(h);::S(I)
      • R(g);N_GUARD,P_PINR(L)::R1(L),XR(g)
      • R(g);N_GUARD::R1(L)
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