MESON Chess Problem Database

Problem Display
PID: 68175 (4Q3/8/4KN2/R2p1pR1/8/N1p3p1/3pkpr1/2r1b1q1 w - - 0 1)

Bakke, Nils Adrian

Die Schwalbe, 1987

4Q3/8/4KN2/R2p1pR1/8/N1p3p1/3pkpr1/2r1b1q1

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qh5#
    • 1...Kf1
      • 2.Qb5#
  • Tries
    • 1.Kxd5+?
      • 1...Kd1
        • 2.Qh5#
      • 1...Kf1
        • 2.Qb5#
      • 1...Kf3
        • 2.Rxf5#
      • 1...Kd3!
    • 1.Kxf5+?
      • 1...Kd1
        • 2.Qh5#
      • 1...Kf1
        • 2.Qb5#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Kf3!
    • 1.Kd7+?
      • 1...Kd1
        • 2.Qh5#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Kf3
        • 2.Rxf5#
      • 1...Kf1!
    • 1.Kf7+?
      • 1...Kf1
        • 2.Qb5#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Kf3
        • 2.Rxf5#
      • 1...Kd1!
  • Keys
    • 1.Kd6+!
      • 1...Kd1
        • 2.Qh5#
      • 1...Kf1
        • 2.Qb5#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Kf3
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAB(F)
  • Tries
    • Try
      • K(D);CHECK,S_FLIGHT,XP(j)
      • Vars
        • K(e);S_FLIGHT::QAB(F)
        • K(e);S_FLIGHT::R(C),XP(k)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • K(D);CHECK,S_FLIGHT,XP(k)
      • Vars
        • K(e);S_FLIGHT::QAB(F)
        • K(e);S_FLIGHT::R(B),XP(j)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • K(D);CHECK,S_FLIGHT
      • Vars
        • K(e);S_FLIGHT::QAB(F)
        • K(e);S_FLIGHT::R(B),XP(j)
        • K(e);S_FLIGHT::R(C),XP(k)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • K(D);CHECK,S_FLIGHT
      • Vars
        • K(e);S_FLIGHT::QAB(F)
        • K(e);S_FLIGHT::R(B),XP(j)
        • K(e);S_FLIGHT::R(C),XP(k)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • K(D);CHECK,P-FLIGHT
    • Vars
      • K(e);S_FLIGHT::QAB(F)
      • K(e);S_FLIGHT::R(B),XP(j)
      • K(e);S_FLIGHT::R(C),XP(k)
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