MESON Chess Problem Database

Problem Display
PID: 245720 (8/2P2b2/4p2r/1R1P1P1R/N3kp2/4P2N/KB1P3b/4nQ2 w - - 0 1)

Wirtanen, Erkki Aukusti

Revista Romana de Sah, 1969

8/2P2b2/4p2r/1R1P1P1R/N3kp2/4P2N/KB1P3b/4nQ2

#2

12 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Sf2#
      • 2.Qb1#
    • 1...fxe3
      • 2.Sg5#
    • 1...f3
      • 2.Sf2#
      • 2.Qc4#
    • 1...exd5
      • 2.Sc5#
    • 1...exf5
      • 2.Sg5#
    • 1...e5
      • 2.Sc3#
  • Tries
    • 1.dxe6?
      • threat
        • 2.Sg5#
        • 2.Sc3#
        • 2.Re5#
      • 1...Rxh5
        • 2.Sc3#
        • 2.Re5#
      • 1...Rxe6
        • 2.Sg5#
        • 2.Sc3#
      • 1...fxe3
        • 2.Sg5#
      • 1...Rg6
        • 2.Sc3#
        • 2.Re5#
      • 1...Sd3
        • 2.Sg5#
        • 2.Sc3#
      • 1...Sf3
        • 2.Sf2#
        • 2.Sc3#
        • 2.Qb1#
      • 1...f3
        • 2.Sf2#
        • 2.Sg5#
        • 2.Sc3#
        • 2.Qc4#
      • 1...Bxe6+!
  • Keys
    • 1.c8S!
      • threat
        • 2.Sd6#
      • 1...fxe3
        • 2.Sg5#
      • 1...exd5
        • 2.Sc5#
      • 1...exf5
        • 2.Sg5#
      • 1...f3
        • 2.Sf2#
        • 2.Qc4#
      • 1...e5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(d);XP(E)::S(F)
    • P(e);SBLOCK,XP(I)::S(G)
    • P(e);P_PINP(I),SBLOCK,XP(J)::S(F)
    • P(e);P_PINP(I),SBLOCK::S(G)
  • Tries
    • Try
      • P(I);P_SPINP(I),XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • P(d);XP(E)::S(F)
      • Refutation
        • B(g);CHECK,XP(I)
  • Actual
    • P(L);
    • Threat
      • S(L)
    • Vars
      • P(d);XP(E)::S(F)
      • P(e);SBLOCK,XP(I)::S(G)
      • P(e);P_PINP(I),SBLOCK,XP(J)::S(F)
      • P(e);P_PINP(I),SBLOCK::S(G)
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