MESON Chess Problem Database

Problem Display
PID: 189448 (8/4N3/1K1p1p2/8/3kpP2/3P4/1P1Q4/8 w - - 0 1)

Rothenstein, J

Deutsches Wochenschach, 1911

8/4N3/1K1p1p2/8/3kpP2/3P4/1P1Q4/8

#2

6 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qc3#
    • 1...d5
      • 2.Sf5#
      • 2.Sc6#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Sf5#
      • 1...f5
        • 2.Sxf5#
      • 1...exd3!
    • 1.dxe4+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxe4!
  • Keys
    • 1.f5!
      • 1...Ke5
        • 2.d4#
      • 1...exd3
        • 2.Qf4#
      • 1...e3
        • 2.Qc3#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • S(F)
      • Vars
        • P(d);::S(F),XP(d)
      • Refutation
        • P(b);P_SPINP(b),XP(C)
    • Try
      • P(C);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • P(D);
    • Vars
      • K(a);OGATE,S_FLIGHT::P(C)
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XP(C)::QAR2(B)
      • P(b);SBLOCK::QAB1(B)
      • P(c);SBLOCK::S(F)
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