MESON Chess Problem Database

Problem Display
PID: 203245 (8/8/8/6K1/5Q2/4N3/3k4/2N5 w - - 0 1)

Dawson, Thomas Rayner

Chess Amateur (The), 1924

8/8/8/6K1/5Q2/4N3/3k4/2N5

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qh2+?
      • 1...Kxc1
        • 2.Qc2#
      • 1...Ke1
        • 2.Sd3#
        • 2.Qe2#
      • 1...Kxe3
        • 2.Qf4#
      • 1...Kc3!
    • 1.Qc7?
      • 1...Kxe3
        • 2.Qf4#
      • 1...Ke1!
    • 1.Qf1?
      • 1...Kxe3
        • 2.Qf4#
      • 1...Kc3!
    • 1.Qf2+?
      • 1...Kxc1
        • 2.Qc2#
      • 1...Kc3!
    • 1.Qb4+?
      • 1...Kxe3
        • 2.Qf4#
      • 1...Kxc1!
  • Keys
    • 1.Qc4!
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxe3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(A)::QAR1(C)
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(A)::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(A)
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
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