MESON Chess Problem Database

Problem Display
PID: 225747 (1Q6/1p2p3/3r4/2RpkPpN/6P1/3P1n2/5B2/2K5 w - - 0 1)

Salai (Snr), Ladislav

Praca, 1954

1Q6/1p2p3/3r4/2RpkPpN/6P1/3P1n2/5B2/2K5

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bg3#
    • 1...e6
      • 2.Qh8#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Bg3#
      • 1...d4
        • 2.Rc5#
      • 1...dxc4!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rxe7#
      • 1...Rc6+
        • 2.Rxc6#
      • 1...Rd7
        • 2.Rxd7#
      • 1...d4
        • 2.Rc5#
      • 1...Sd4
        • 2.Bg3#
      • 1...e6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::B(B)
    • P(g);::QAB(H)
  • Tries
    • Try
      • R(E);N_PINP(b)
      • Threat
        • B(B)
      • Vars
        • P(b);OGATEB::R(E)
      • Refutation
        • P(b);XR(E)
  • Actual
    • R(E);N_PINP(b),N_PINR(e)
    • Threat
      • R(E),XP(g)
    • Vars
      • R(e);CHECK,OGATEB::QAB(H)+R(E),XR(e)
      • R(e);OGATEB::QAB(H)+R(E),XR(e)
      • P(b);OGATEB::R(E)
      • S(a);SBLOCK::B(B)
      • P(g);S_CUTR(e)::QAB(H)
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