MESON Chess Problem Database

Problem Display
PID: 174967 (8/8/5p2/3pkP2/1Q3p1N/8/3PPP2/3K3b w - - 0 1)

von Wardener, Friedrich Freiherr

Bohemia, 1901

8/8/5p2/3pkP2/1Q3p1N/8/3PPP2/3K3b

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.d4#
  • Tries
    • 1.e3?
      • threat
        • 2.Qe7#
        • 2.Qxf4#
        • 2.exf4#
      • 1...fxe3
        • 2.f4#
      • 1...d4
        • 2.Qxd4#
      • 1...Be4
        • 2.Qe7#
        • 2.Qb8#
        • 2.d4#
      • 1...f3
        • 2.Qe7#
        • 2.Qf4#
      • 1...Bf3+!
    • 1.f3?
      • threat
        • 2.d4#
      • 1...d4
        • 2.Qc5#
      • 1...Bxf3!
  • Keys
    • 1.e4!
      • threat
        • 2.Sg6#
      • 1...Bf3+
        • 2.Sxf3#
      • 1...Bxe4
        • 2.d4#
      • 1...dxe4
        • 2.Qc5#
      • 1...fxe4 ep
        • 2.f4#
      • 1...d4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::P(B)
  • Tries
    • Try
      • P(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);OGATE,XP(C)::P(D)
        • P(c);::QAB1(E),XP(c)
      • Refutation
        • B(a);CHECK
    • Try
      • P(D);
      • Threat
        • P(B)
      • Vars
        • P(c);OGATEB::QAR2(E)
      • Refutation
        • B(a);P_PINP(C),XP(D)
  • Actual
    • P(C);
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,N_GUARD::S(F),XB(a)
      • B(a);SBLOCK,XP(C)::P(B)
      • P(c);OGATEB,SBLOCK,XP(C)::QAR2(E)
      • P(b);EP,OGATE,XP(C)::P(D)
      • P(c);SBLOCK::QAR2(E)
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