MESON Chess Problem Database

Problem Display
PID: 163117 (7R/8/4k3/1P5K/7Q/1R6/7B/1B6 w - - 0 1)

Gronroos, Mikael

Tehtavaniekka, 2015

7R/8/4k3/1P5K/7Q/1R6/7B/1B6

#2

7 + 1

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Bf5#
  • Tries
    • 1.Kg6?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kd5!
    • 1.Bd3?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
    • 1.Be4?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
    • 1.Bg6?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kd5!
    • 1.Rc3?
      • 1...Kd5
        • 2.Ba2#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
    • 1.Rd3?
      • 1...Kf5
        • 2.Re3#
        • 2.Rd6#
      • 1...Kf7!
    • 1.Re3+?
      • 1...Kd7
        • 2.Bf5#
        • 2.Re7#
        • 2.Rd8#
        • 2.Qe7#
        • 2.Qd8#
        • 2.Qh3#
        • 2.Qd4#
        • 2.Qg4#
      • 1...Kf7
        • 2.Re7#
        • 2.Qe7#
      • 1...Kd5!
    • 1.Rf3?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kd5!
    • 1.Rb4?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
    • 1.Rc8?
      • 1...Kd5
        • 2.Qc4#
        • 2.Qe4#
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
    • 1.Re8+?
      • 1...Kd7
        • 2.Qe7#
        • 2.Qd8#
      • 1...Kf7
        • 2.Qe7#
      • 1...Kd5!
    • 1.Rf8?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kd5!
    • 1.Qg5?
      • 1...Kd7
        • 2.Bf5#
      • 1...Kf7!
  • Keys
    • 1.Ba2!
      • 1...Kd5
        • 2.Rc3#
      • 1...Kf5
        • 2.Rf3#
      • 1...Kd7
        • 2.Rd3#
      • 1...Kf7
        • 2.Rg3#

Anticipated by 47459(1969), 24216(1970), 66974(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(A)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::B(A)+R(C)
      • K(a);S_FLIGHT::R(C)
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