MESON Chess Problem Database

Problem Display
PID: 122953 (8/3ppp2/3RnR2/3Bk3/8/4B3/4K3/7Q w - - 0 1)

Preiswerk, Walther Edouard

Schweizerische Schachzeitung, 1907

8/3ppp2/3RnR2/3Bk3/8/4B3/4K3/7Q

#2

6 + 5

16108 Walther Preiswerks Shachprobleme (M. Henneberger) 1949
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qa1#
      • 2.Qh2#
      • 2.Qh5#
    • 1...Sg5
      • 2.Qa1#
      • 2.Qh2#
    • 1...Sc7
      • 2.Qe4#
      • 2.Qa1#
      • 2.Qh2#
      • 2.Qh5#
    • 1...Sg7
      • 2.Qe4#
      • 2.Qa1#
      • 2.Qh2#
    • 1...Sd8
      • 2.Qe4#
      • 2.Qa1#
      • 2.Qh2#
      • 2.Qh5#
    • 1...Sf8
      • 2.Qe4#
      • 2.Qa1#
      • 2.Qh2#
      • 2.Qh5#
  • Tries
    • 1.Qa1+?
      • 1...Sd4+
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Kxd6!
    • 1.Qh2+?
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kxf6!
    • 1.Qh5+?
      • 1...Kxf6
        • 2.Bd4#
        • 2.Qg5#
      • 1...Sg5
        • 2.Qh2#
        • 2.Qxg5#
      • 1...Kxd6!
  • Keys
    • 1.Be4!
      • 1...Sd4+
        • 2.Bxd4#
      • 1...Sf4+
        • 2.Bxf4#
      • 1...Kxd6
        • 2.Qh2#
      • 1...Kxf6
        • 2.Qa1#
        • 2.Qh8#
      • 1...exd6
        • 2.Rf5#
      • 1...exf6
        • 2.Rd5#
      • 1...Sc5
        • 2.Bd4#
        • 2.Bf4#
      • 1...Sg5
        • 2.Bd4#
        • 2.Bf4#
      • 1...Sc7
        • 2.Bd4#
        • 2.Bf4#
      • 1...Sg7
        • 2.Bd4#
        • 2.Bf4#
      • 1...Sd8
        • 2.Bd4#
        • 2.Bf4#
      • 1...Sf8
        • 2.Bd4#
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT,XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT,XR(F)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT,XR(E)
  • Actual
    • B(D);
    • Vars
      • S(b);CHECK,N_GUARD::B(C),XS(b)
      • K(a);P_SPINS(b),S_FLIGHT,XR(E)::QAB(A)
      • P(d);SBLOCK,XR(E)::R1(F)
      • P(d);SBLOCK,XR(F)::R1(E)
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