MESON Chess Problem Database

Problem Display
PID: 227790 (8/8/8/3p4/3Q3p/7k/5K2/8 w - - 0 1)

Zilahi, Zoltan

Magyar Sakkvilag, 1926

8/8/8/3p4/3Q3p/7k/5K2/8

#2

2 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh2
      • 2.Qxh4#
  • Tries
    • 1.Kf1?
      • 1...Kh2
        • 2.Qxh4#
      • 1...Kg3!
    • 1.Qa4?
      • 1...Kh2
        • 2.Qxh4#
      • 1...d4!
    • 1.Qb4?
      • 1...Kh2
        • 2.Qxh4#
      • 1...d4!
    • 1.Qe4?
      • threat
        • 2.Qg2#
      • 1...Kh2
        • 2.Qg2#
        • 2.Qxh4#
      • 1...dxe4!
    • 1.Qg4+?
      • 1...Kh2
        • 2.Qg2#
        • 2.Qxh4#
      • 1...Kxg4!
    • 1.Qxd5?
      • threat
        • 2.Qg2#
      • 1...Kh2
        • 2.Qg2#
      • 1...Kg4!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qg2#
      • 1...Kh2
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(B),XP(b)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(B),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B),XP(b)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B),XP(b)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);XP(c)
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
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