MESON Chess Problem Database

Problem Display
PID: 269854 (4k2r/8/4KB2/8/8/3B4/4Q3/2b5 w k - 0 1)

Ignatenko, Gennady Petrovich

64 Shakhmatnoe obozrenie, 2023

4k2r/8/4KB2/8/8/3B4/4Q3/2b5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Bb5#
  • Tries
    • 1.Be7?
      • threat
        • 2.Bb5#
        • 2.Bg6#
      • 1...Rh5
        • 2.Bg6#
        • 2.Qxh5#
      • 1...Rh7
        • 2.Bb5#
      • 1...Rf8
        • 2.Bb5#
      • 1...Rg8
        • 2.Bb5#
      • 1...Rh6+!
    • 1.Qh5+?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qxh8#
      • 1...Rxh5!
    • 1.Qg2?
      • threat
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...Bf4!
    • 1.Qh2?
      • threat
        • 2.Qb8#
        • 2.Qxh8#
      • 1...Kf8
        • 2.Qb8#
        • 2.Qxh8#
      • 1...0-0
        • 2.Bh7#
        • 2.Qh7#
        • 2.Qh8#
      • 1...Bf4
        • 2.Qxh8#
      • 1...Rh3
        • 2.Qb8#
      • 1...Rh4
        • 2.Qb8#
      • 1...Rh5
        • 2.Qb8#
      • 1...Rh6
        • 2.Qb8#
      • 1...Rh7
        • 2.Qb8#
      • 1...Rf8
        • 2.Bb5#
        • 2.Qb8#
      • 1...Rg8
        • 2.Qb8#
      • 1...Ba3
        • 2.Qb8#
      • 1...Bh6
        • 2.Qb8#
      • 1...Rxh2!
    • 1.Qe4?
      • threat
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...0-0
        • 2.Qg6#
        • 2.Qh7#
      • 1...Bf4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc8#
      • 1...Kf8
        • 2.Qc8#
      • 1...0-0
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::B(B)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::B(B)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(A);CHECK
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR(A),XR(c)
        • R(c);::QAR(A)
        • R(c);P_PINB(D)::QAR(A)
        • B(a);::QAR(A)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);P-FLIGHT::QAR(A)
      • K(b);0-0,OGATEB::B(B)
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