MESON Chess Problem Database

Problem Display
PID: 262796 (1Q2b2K/2p3p1/7k/3R4/8/8/8/8 w - - 0 1)

Ruszczynski, Piotr

Szachy, 1969

1Q2b2K/2p3p1/7k/3R4/8/8/8/8

#2

3 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...g6
        • 2.Qg7#
        • 2.Qh2#
      • 1...g5!
    • 1.Qd8?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...Kg6!
    • 1.Qxe8?
      • threat
        • 2.Rh5#
        • 2.Qh5#
      • 1...g6
        • 2.Qf8#
      • 1...g5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qh7#
      • 1...Bg6
        • 2.Qc1#
      • 1...g6
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);XB(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • B(d);SBLOCK,S_CUTP(c)::QAB(B)
      • P(c);SBLOCK,S_CUTB(d)::QAR(B)
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