MESON Chess Problem Database

Problem Display
PID: 241990 (2kb4/2p5/N1Q5/8/7p/7K/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

2kb4/2p5/N1Q5/8/7p/7K/8/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Qxc7#
    • 1...Bf6
      • 2.Qxc7#
    • 1...Be7
      • 2.Qxc7#
  • Tries
    • 1.Kg2?
      • 1...Bg5
        • 2.Qxc7#
      • 1...Bf6
        • 2.Qxc7#
      • 1...Be7
        • 2.Qxc7#
      • 1...h3+!
    • 1.Kh2?
      • 1...Bg5
        • 2.Qxc7#
      • 1...Bf6
        • 2.Qxc7#
      • 1...Be7
        • 2.Qxc7#
      • 1...h3!
    • 1.Kg4?
      • 1...Bg5
        • 2.Qxc7#
      • 1...Bf6
        • 2.Qxc7#
      • 1...Be7
        • 2.Qxc7#
      • 1...h3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...Kb8
        • 2.Qb7#
      • 1...Bg5
        • 2.Qa8#
      • 1...Bf6
        • 2.Qa8#
      • 1...Be7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::QAR1(C),XP(b)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);N_GUARD::QAR1(C),XP(b)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(d);N_GUARD::QAR1(C),XP(b)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);N_GUARD::QAR1(C),XP(b)
      • Refutation
        • P(a);
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);N_SPINP(b),P-FLIGHT::QAR1(C)
      • B(d);::QAR2(C)
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