MESON Chess Problem Database

Problem Display
PID: 181960 (8/8/1pQ5/1p3p2/1P1kn1N1/Kp1p1p2/3N1r2/3b2B1 w - - 0 1)

Preiswerk, Walther Edouard

Schweizerische Schachzeitung, 1911

8/8/1pQ5/1p3p2/1P1kn1N1/Kp1p1p2/3N1r2/3b2B1

#2

6 + 10

16108 Walther Preiswerks Shachprobleme (M. Henneberger) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Sxf3#
    • 1...Be2
      • 2.Sxb3#
    • 1...Sxd2
      • 2.Bxf2#
    • 1...Sc3
      • 2.Bxf2#
    • 1...Sg3
      • 2.Bxf2#
    • 1...Sg5
      • 2.Bxf2#
    • 1...Sd6
      • 2.Bxf2#
    • 1...Sf6
      • 2.Bxf2#
  • Tries
    • 1.Qf6+?
      • 1...Kd5
        • 2.Se3#
      • 1...Sxf6!
  • Keys
    • 1.Kb2!
      • 1...Sxd2
        • 2.Bxf2#
      • 1...fxg4
        • 2.Qxe4#
      • 1...Bc2
        • 2.Sxf3#
      • 1...Be2
        • 2.Sxb3#
      • 1...Sc3
        • 2.Bxf2#
      • 1...Sg3
        • 2.Bxf2#
        • 2.Qd7#
        • 2.Qd6#
      • 1...Sc5
        • 2.Bxf2#
        • 2.Qd6#
      • 1...Sg5
        • 2.Bxf2#
        • 2.Qd7#
        • 2.Qd6#
      • 1...Sd6
        • 2.Bxf2#
        • 2.Qxd6#
      • 1...Sf6
        • 2.Bxf2#
      • 1...f4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::S(B),XP(e)
    • B(a);N_GUARD::S(B),XP(c)
    • S(g);N_GUARD,XS(B)::B(A),XR(b)
    • S(g);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT::S(E)
      • Refutation
        • S(g);XQ(F)
  • Actual
    • K(C);P_SPINS(B),S_FLIGHT
    • Vars
      • S(g);N_GUARD,XS(B)::B(A),XR(b)
      • P(i);N_GUARD,XS(E)::QAR1(F),XS(g)
      • B(a);N_PINS(B)::S(B),XP(e)
      • B(a);N_PINS(B)::S(B),XP(c)
      • S(g);N_GUARD::B(A),XR(b)
      • P(i);N_GUARD::QAR1(F),XS(g)
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