MESON Chess Problem Database

Problem Display
PID: 227746 (8/1B2Q3/5pb1/8/1N1k1P2/1P4P1/1P2n3/4Kn2 w - - 0 1)

von Gottschall, Hermann

Reichspost, 1926

8/1B2Q3/5pb1/8/1N1k1P2/1P4P1/1P2n3/4Kn2

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Sc2+?
      • 1...Kd3
        • 2.Qxe2#
      • 1...Bxc2!
    • 1.Sc6+?
      • 1...Kd3
        • 2.Qxe2#
      • 1...Kd5!
    • 1.Qc7?
      • threat
        • 2.Qb6#
      • 1...Sxf4
        • 2.Qc3#
      • 1...Ke3!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sc2#
      • 1...Ke3
        • 2.Sc2#
      • 1...Bxe4
        • 2.Qa7#
      • 1...Se3
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::QAB1(H)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(H),XS(b)
      • Refutation
        • B(e);XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(H),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • S(b);N_GUARD,XP(F)::QAB1(H)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(G);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT::S(E)
      • B(e);SBLOCK,XB(G)::QAB(H)
      • S(a);SBLOCK::S(E)
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