MESON Chess Problem Database

Problem Display
PID: 243610 (8/1p3N2/1K6/8/2pk4/5Q2/4P3/8 w - - 0 1)

Bakay, Bela

Magyar Sakkvilag, 1931

8/1p3N2/1K6/8/2pk4/5Q2/4P3/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Kb5?
      • 1...c3
        • 2.Qd3#
      • 1...b6!
    • 1.Sg5?
      • 1...c3
        • 2.Qe4#
      • 1...Ke5!
    • 1.Sd6?
      • 1...c3
        • 2.Qe4#
      • 1...Ke5!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxc3!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxe3!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kc3!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Ke3!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...c3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::QAR1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(a);N_GUARD::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • S(D);
      • Vars
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • P(a);N_GUARD::QAR1(B)
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