MESON Chess Problem Database

Problem Display
PID: 255981 (8/7b/8/6n1/5Np1/R2ppkBn/Q4N1K/8 w - - 0 1)

Sachsel, Robert

Wiener Schachzeitung, 1937

8/7b/8/6n1/5Np1/R2ppkBn/Q4N1K/8

#2

6 + 7

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...exf2
      • 2.Qe2#
    • 1...e2
      • 2.Qxe2#
  • Tries
    • 1.S2xh3?
      • threat
        • 2.Sxg5#
        • 2.Qg2#
      • 1...Ke4
        • 2.Qd5#
      • 1...Sxh3
        • 2.Qg2#
      • 1...e2
        • 2.Qxe2#
      • 1...Se4
        • 2.Sg1#
        • 2.Qg2#
      • 1...Se6
        • 2.Qg2#
      • 1...Sf7
        • 2.Qg2#
      • 1...d2
        • 2.Sxg5#
      • 1...gxh3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qg2#
      • 1...Kxe4
        • 2.Qd5#
      • 1...Sxf4
        • 2.Sxg5#
      • 1...e2
        • 2.Qxe2#
      • 1...Sf2
        • 2.Sxg5#
      • 1...d2
        • 2.Sxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);P_SPINP(a),XS(B)::QAB1(A)
    • P(b);P_SPINP(a)::QAB1(A),XP(b)
  • Tries
    • Try
      • S(B);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);S_CUTB(g),S_CUTS(f),S_FLIGHT::QAB1(A)
        • S(f);XS(B)::QAB1(A)
        • P(b);P_SPINP(a)::QAB1(A),XP(b)
        • S(f);::QAB1(A)
        • P(a);P_SPINP(b)::S(B),XS(f)
      • Refutation
        • P(e);XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
      • S(d);N_GUARD,XS(F)::S(B),XS(f)
      • P(b);P_SPINP(a)::QAB1(A),XP(b)
      • S(d);N_GUARD::S(B),XS(f)
      • P(a);P_SPINP(b)::S(B),XP(a)
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