MESON Chess Problem Database

Problem Display
PID: 99418 (3k4/3P2p1/5pP1/3Q1K2/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

3k4/3P2p1/5pP1/3Q1K2/8/8/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.d8Q#
    • 1...Ke7
      • 2.d8Q#
  • Tries
    • 1.Ke4?
      • 1...Kc7
        • 2.d8Q#
      • 1...Ke7
        • 2.d8Q#
      • 1...f5+!
    • 1.Kf4?
      • 1...Kc7
        • 2.d8Q#
      • 1...Ke7
        • 2.d8Q#
      • 1...f5!
    • 1.Kg4?
      • 1...Kc7
        • 2.d8Q#
      • 1...Ke7
        • 2.d8Q#
      • 1...f5+!
    • 1.Qa8+?
      • 1...Kc7
        • 2.d8Q#
      • 1...Ke7
        • 2.d8Q#
      • 1...Kxd7!
    • 1.Qd1?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kc7!
    • 1.Qd2?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kc7!
    • 1.Qd3?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kc7!
    • 1.Qd4?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kc7!
    • 1.Qa5+?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kxd7!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Qa5#
      • 1...Kc7
        • 2.d8Q#

FEATURES

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