MESON Chess Problem Database

Problem Display
PID: 250225 (1q1r1nb1/1p4Q1/8/2PkN3/1KRp1b2/4p1NB/8/8 w - - 0 1)

Buchner, Richard

Westfalische Allgemeine Volkszeitung, 1927

1q1r1nb1/1p4Q1/8/2PkN3/1KRp1b2/4p1NB/8/8

#2

7 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxb7#
    • 1...Be6
      • 2.Bg2#
    • 1...Se6
      • 2.Bg2#
  • Tries
    • 1.Qxg8+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Kxe5!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rxd4#
      • 1...Ke4
        • 2.Sc3#
      • 1...Qxe5
        • 2.Qxb7#
      • 1...Bxe5
        • 2.Qg2#
      • 1...Se6
        • 2.Bg2#
      • 1...d3
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD,SBLOCK,XS(F)::QAB(G),XP(e)
    • B(i);SBLOCK::B(B)
    • S(h);SBLOCK::B(B)
  • Tries
    • Try
      • Q(G);CHECK,XB(i)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB1(G),XS(h)
      • Refutation
        • K(d);P-FLIGHT,XS(F)
  • Actual
    • S(A);
    • Threat
      • R1(D),XP(b)
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT::S(A)
      • Q(f);N_GUARD,SBLOCK,XS(F)::QAB(G),XP(e)
      • B(c);SBLOCK,XS(F)::QAB(G)
      • S(h);SBLOCK::B(B)
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