MESON Chess Problem Database

Problem Display
PID: 95155 (2K2B2/2P1P3/8/3k4/8/2Q2R2/8/8 w - - 0 1)

Rumyantsev, Sergei Yuryewitch

Omskaya Pravda, 1976

2K2B2/2P1P3/8/3k4/8/2Q2R2/8/8

#2

6 + 1

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bg7?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qc6#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kd6!
    • 1.Rf5+?
      • 1...Kd6
        • 2.Qf6#
        • 2.e8Q#
        • 2.e8R#
      • 1...Ke6
        • 2.Qe5#
        • 2.Qf6#
      • 1...Ke4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.e8Q#
        • 2.e8B#
      • 1...Ke6
        • 2.Rf6#
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxd4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.e8Q#
        • 2.e8R#
      • 1...Kd6
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxc4!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Ke5
        • 2.Bg7#
      • 1...Kxc6!
    • 1.e8S?
      • 1...Ke4
        • 2.Sf6#
      • 1...Ke6!
  • Keys
    • 1.e8B!
      • 1...Ke4
        • 2.Bc6#
      • 1...Ke6
        • 2.Bf7#

Anticipated by 2187(1855)

This anticipates 243086(1981), 110385(2000), 173960(2005)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT::B(D)
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