MESON Chess Problem Database

Problem Display
PID: 231426 (8/1B5K/4p3/Q6R/6k1/8/8/2b5 w - - 0 1)

Henriksen, Thorleif Cammillo

Nova Paka, 1927

8/1B5K/4p3/Q6R/6k1/8/8/2b5

#2

4 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qg5#
    • 1...Bb2
      • 2.Qg5#
    • 1...Ba3
      • 2.Qg5#
    • 1...Bg5
      • 2.Qxg5#
  • Tries
    • 1.Rh4+?
      • 1...Kg3
        • 2.Qe1#
      • 1...Kxh4!
    • 1.Qd5?
      • threat
        • 2.Qf3#
      • 1...Kg3
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
        • 2.Qg5#
      • 1...exd5!
    • 1.Qf5+?
      • 1...Kg3
        • 2.Rh3#
        • 2.Qf3#
      • 1...exf5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qh4#
      • 1...Kg3
        • 2.Qh4#
      • 1...Kf4
        • 2.Qg5#
      • 1...Kxh5
        • 2.Bf3#
      • 1...Bg5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(b);P-FLIGHT::QAB1(A)
    • B(a);N_GUARD::QAR1(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(A)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAB1(A)
      • K(b);S_FLIGHT,XR(B)::B(C)
      • B(a);N_GUARD::QAR1(A),XB(a)
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