MESON Chess Problem Database

Problem Display
PID: 53493 (8/4p3/2K5/3NpN2/n3k3/8/8/5Q2 w - - 0 1)

Nash, Edmund A

The Chess Review, 1934

8/4p3/2K5/3NpN2/n3k3/8/8/5Q2

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sb6
      • 2.Sc3#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Kc7?
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...e6
        • 2.Sf6#
      • 1...Kxd5!
    • 1.Sd6+?
      • 1...Kd4
        • 2.Qc4#
        • 2.Qd1#
      • 1...exd6!
  • Keys
    • 1.Kb5!
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
    • P(d);N_GUARD::S(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
        • P(d);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • S(C);CHECK
      • Refutation
        • P(d);XS(C)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • S(a);CHECK,N_GUARD::S(B),XS(a)
      • K(b);S_FLIGHT,XS(B)::QAB1(A)
      • S(a);N_GUARD::S(B)
      • P(d);N_GUARD::S(B)
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