MESON Chess Problem Database

Problem Display
PID: 50974 (8/8/8/4p3/4Qnpp/7k/8/7K w - - 0 1)

Meinartz, F

Magyar Sakkvilag, 1932

8/8/8/4p3/4Qnpp/7k/8/7K

#2

2 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kg3
      • 2.Qe3#
    • 1...Se2
      • 2.Qg2#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sd3
      • 2.Qg2#
    • 1...Sd5
      • 2.Qg2#
    • 1...Sh5
      • 2.Qg2#
    • 1...Se6
      • 2.Qg2#
    • 1...Sg6
      • 2.Qg2#
    • 1...g3
      • 2.Qf5#
  • Tries
    • 1.Kg1?
      • 1...Kg3
        • 2.Qe3#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sd3
        • 2.Qg2#
      • 1...Sd5
        • 2.Qg2#
      • 1...Sh5
        • 2.Qg2#
      • 1...Se6
        • 2.Qg2#
      • 1...Sg6
        • 2.Qg2#
      • 1...g3
        • 2.Qf5#
      • 1...Se2+!
    • 1.Qd3+?
      • 1...g3
        • 2.Qf5#
      • 1...Sxd3!
    • 1.Qxf4?
      • threat
        • 2.Qh2#
      • 1...g3
        • 2.Qf5#
      • 1...exf4!
  • Keys
    • 1.Qxe5!
      • 1...Kg3
        • 2.Qe3#
      • 1...Se2
        • 2.Qh2#
      • 1...Sg2
        • 2.Qh2#
      • 1...Sd3
        • 2.Qh2#
      • 1...Sd5
        • 2.Qh2#
      • 1...Sh5
        • 2.Qh2#
      • 1...Se6
        • 2.Qh2#
      • 1...Sg6
        • 2.Qh2#
      • 1...g3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
    • P(c);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(b);N_GUARD::QAB1(B)
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(B)
      • Refutation
        • S(b);XQ(B)
    • Try
      • Q(B);XS(b)
      • Threat
        • QAR1(B)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • P(e);XQ(B)
  • Actual
    • Q(B);XP(e)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::QAR2(B)
      • S(b);OGATE::QAR1(B)
      • P(c);OGATEB,SBLOCK::QAB(B)
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