MESON Chess Problem Database

Problem Display
PID: 238107 (3N1K2/5b1B/5k2/n4p2/5P2/2P2n2/8/5Q2 w - - 0 1)

Hermanson, Halvar

Revista Romana de Sah, 1960

3N1K2/5b1B/5k2/n4p2/5P2/2P2n2/8/5Q2

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe7#
      • 1...Be6
        • 2.Qxe6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sc6!
    • 1.Qd3?
      • threat
        • 2.Qxf5#
      • 1...Bg6
        • 2.Qd6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Be6!
    • 1.Qh3?
      • threat
        • 2.Qxf5#
      • 1...Be6
        • 2.Qh6#
      • 1...Sd4
        • 2.Qh4#
      • 1...Sh4
        • 2.Qxh4#
      • 1...Bg6!
    • 1.Qa6+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Sc6!
    • 1.Qg1?
      • threat
        • 2.Qg7#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Sg5
        • 2.Qd4#
        • 2.Qxg5#
      • 1...Sxg1!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qg7#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Sg5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(e);N_GUARD::QAR1(A),XB(e)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • B(e);N_GUARD::QAR2(A)
        • S(a);N_GUARD::QAB(A),XS(a)
        • S(a);N_GUARD::QAB(A)
      • Refutation
        • B(e);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • B(e);N_GUARD::QAR2(A)
        • S(a);N_GUARD::QAB(A)
        • S(a);N_GUARD::QAB(A),XS(a)
      • Refutation
        • B(e);
    • Try
      • Q(A);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::QAR1(A),XB(e)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(e);N_GUARD::QAR1(A),XB(e)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • B(e);N_GUARD::QAR1(A),XB(e)
      • S(a);N_GUARD::QAB1(A),XS(a)
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