MESON Chess Problem Database

Problem Display
PID: 222232 (8/2p5/2Q5/4ppp1/2p1Nk1p/2PP3p/3PB1bK/8 w - - 0 1)

Langweil, Walter

Funkschach, 1926

8/2p5/2Q5/4ppp1/2p1Nk1p/2PP3p/3PB1bK/8

#2

7 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...fxe4
      • 2.Qf6#
    • 1...g4
      • 2.Qh6#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Sh5#
      • 1...Bf3
        • 2.Qxf3#
      • 1...e4
        • 2.Qxc7#
      • 1...g4
        • 2.Qh6#
      • 1...hxg3+!
    • 1.Sc5?
      • threat
        • 2.Se6#
      • 1...Bf3
        • 2.Qxf3#
      • 1...e4
        • 2.Qxc7#
      • 1...Bd5!
    • 1.Sf6?
      • threat
        • 2.Sh5#
      • 1...e4
        • 2.Qxc7#
      • 1...Bf3
        • 2.Qxf3#
      • 1...g4!
    • 1.Qc5?
      • threat
        • 2.Qe3#
      • 1...fxe4
        • 2.Qf8#
      • 1...Bf3!
  • Keys
    • 1.Sf2!
      • 1...Bxc6
        • 2.Sxh3#
      • 1...cxd3
        • 2.Sxd3#
      • 1...e4
        • 2.Qxc7#
      • 1...g4
        • 2.Qh6#
      • 1...Bf1
        • 2.Qf3#
      • 1...Bh1
        • 2.Sxh3#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Be4
        • 2.Sxh3#
      • 1...Bd5
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATEB,XS(F)::QAR2(G)
    • P(h);OGATEB::QAB(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(a);N_GUARD::QAR1(G),XB(a)
        • P(f);OGATEB::QAB(G),XP(i)
        • P(h);OGATEB::QAB(G)
      • Refutation
        • P(e);CHECK,XS(F)
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(a);N_GUARD::QAR1(G),XB(a)
        • P(f);OGATEB::QAB(G),XP(i)
      • Refutation
        • B(a);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • P(f);OGATEB::QAB(G),XP(i)
        • B(a);N_GUARD::QAR1(G),XB(a)
      • Refutation
        • P(h);
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • P(g);OGATEB,XS(F)::QAR(G)
      • Refutation
        • B(a);
  • Actual
    • S(F);
    • Vars
      • B(a);N_GUARD,XQ(G)::S(F),XP(b)
      • P(c);XP(E)::S(F),XP(c)
      • P(f);OGATEB::QAB(G),XP(i)
      • P(h);OGATEB::QAB(G)
      • B(a);N_GUARD::QAR1(G)
      • B(a);N_GUARD::S(F),XP(b)
      • B(a);N_GUARD::QAR1(G),XB(a)
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