MESON Chess Problem Database

Problem Display
PID: 198465 (8/4K3/1Q1PpPRB/2N1kp2/1Npr2p1/3p4/8/8 w - - 0 1)

Fjellstrom, Zakarias

Recomm., Fontaine MT, 1978-1979

8/4K3/1Q1PpPRB/2N1kp2/1Npr2p1/3p4/8/8

#2

8 + 7

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sd7#
    • 1...Rd5
      • 2.Sc6#
    • 1...Rxd6
      • 2.Qxd6#
    • 1...f4
      • 2.Rg5#
  • Tries
    • 1.d7?
      • threat
        • 2.Qxe6#
      • 1...Re4
        • 2.Qd6#
      • 1...Rf4
        • 2.Qd6#
      • 1...Rd5
        • 2.Sc6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rxd7+!
  • Keys
    • 1.f7!
      • threat
        • 2.Rxe6#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Re4
        • 2.Sd7#
      • 1...Rf4
        • 2.Bg7#
      • 1...Rd5
        • 2.Sc6#
      • 1...f4
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::S(B)
    • R(c);SBLOCK::S(A)
    • R(c);OGATE,XP(D)::QAB1(C),XR(c)
    • P(f);OGATEB,SBLOCK::R(F)
  • Tries
    • Try
      • P(D);
      • Threat
        • QAR1(C),XP(g)
      • Vars
        • R(c);N_GUARD::QAB1(C)
        • R(c);SBLOCK::S(A)
        • R(c);N_GUARD::QAB1(C),XR(c)
      • Refutation
        • R(c);CHECK,XP(D)
  • Actual
    • P(E);
    • Threat
      • R1(F),XP(g)
    • Vars
      • R(c);OGATE,XP(D)::QAB1(C),XR(c)
      • R(c);SBLOCK::S(B)
      • R(c);SBLOCK::B(G)
      • R(c);SBLOCK::S(A)
      • P(f);OGATEB,SBLOCK::R(F)
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