MESON Chess Problem Database

Problem Display
PID: 242075 (8/8/8/5n2/B7/Q7/3k1K2/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/8/5n2/B7/Q7/3k1K2/8

#2

3 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
    • 1...Sd4
      • 2.Qe3#
    • 1...Sh4
      • 2.Qe3#
    • 1...Sd6
      • 2.Qe3#
    • 1...Sh6
      • 2.Qe3#
    • 1...Se7
      • 2.Qe3#
    • 1...Sg7
      • 2.Qe3#
  • Tries
    • 1.Qd3+?
      • 1...Kc1
        • 2.Qc2#
      • 1...Kxd3!
    • 1.Qf3?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...Sd4
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Sd6
        • 2.Qe3#
      • 1...Sh6
        • 2.Qe3#
      • 1...Se7
        • 2.Qe3#
      • 1...Sg7
        • 2.Qe3#
      • 1...Kc1!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qc2#
      • 1...Kc1
        • 2.Qc2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sd4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::QAB1(B),XS(b)
    • S(b);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);S_FLIGHT::QAR1(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(b);N_GUARD::QAB1(B)
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