MESON Chess Problem Database

Problem Display
PID: 227901 (8/8/7p/7B/p7/K7/2kPQ3/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/8/7p/7B/p7/K7/2kPQ3/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb1
      • 2.Qd1#
    • 1...Kc1
      • 2.Qd1#
  • Tries
    • 1.Ka2?
      • 1...Kc1
        • 2.Qd1#
      • 1...a3!
    • 1.Bf3?
      • 1...Kb1
        • 2.Qd1#
      • 1...Kc1
        • 2.Qd1#
      • 1...h5!
    • 1.Bg4?
      • 1...Kb1
        • 2.Qd1#
      • 1...Kc1
        • 2.Qd1#
      • 1...h5!
    • 1.Qf3?
      • 1...Kb1
        • 2.Qd1#
      • 1...Kc1
        • 2.Qd1#
      • 1...Kxd2!
    • 1.Qb5?
      • 1...Kc1
        • 2.Qb2#
      • 1...Kxd2!
    • 1.d3+?
      • 1...Kb1
        • 2.Qd1#
        • 2.Qb2#
      • 1...Kc1
        • 2.Qd1#
        • 2.Qb2#
      • 1...Kc3!
    • 1.d4+?
      • 1...Kb1
        • 2.Qd1#
        • 2.Qb2#
      • 1...Kc1
        • 2.Qd1#
        • 2.Qb2#
      • 1...Kc3!
  • Keys
    • 1.Bg6+!
      • 1...Kc1
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR2(B)
    • K(a);P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • P(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(D);CHECK
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
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Developed and maintained by Brian Stephenson.
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