MESON Chess Problem Database

Problem Display
PID: 48067 (8/3K4/8/3kp3/3P4/3Q4/3nP3/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/3K4/8/3kp3/3P4/3Q4/3nP3/8

#2

4 + 3

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.e4#
    • 1...Sf1
      • 2.e4#
    • 1...Sb3
      • 2.e4#
    • 1...Sf3
      • 2.e4#
    • 1...Sc4
      • 2.e4#
  • Tries
    • 1.Qb5+?
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kxd4!
  • Keys
    • 1.e3!
      • 1...exd4
        • 2.Qxd4#
      • 1...Sb1
        • 2.e4#
      • 1...Sf1
        • 2.e4#
      • 1...Sb3
        • 2.e4#
      • 1...Sf3
        • 2.e4#
      • 1...Sc4
        • 2.e4#
      • 1...Se4
        • 2.Qb3#
      • 1...e4
        • 2.Qb5#

This anticipates 232900(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(A)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • P(A);
    • Vars
      • P(c);OGATE,P_SPINP(c),XP(C)::QAR1(B),XP(c)
      • S(a);N_GUARD::P(A)
      • S(a);N_GUARD,SBLOCK::QAB(B)
      • P(c);SBLOCK::QAR2(B)
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