MESON Chess Problem Database

Problem Display
PID: 2403 (1n6/1R6/2p5/6R1/8/1K1kp3/3N3Q/8 w - - 0 1)

Henderson, John

Source?, 0000

1n6/1R6/2p5/6R1/8/1K1kp3/3N3Q/8

#2

5 + 4

4774 Canadian Chess Problems 1890
4817 English Mechanic and World of Science 1893

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
    • 1...Sa6
      • 2.Rd7#
    • 1...Sd7
      • 2.Rxd7#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Qe2+?
      • 1...Kd4
        • 2.Rb4#
        • 2.Qc4#
      • 1...Kxe2!
  • Keys
    • 1.Re7!
      • 1...Kd4
        • 2.Qd6#
      • 1...exd2
        • 2.Qd6#
      • 1...e2
        • 2.Qd6#
      • 1...Sa6
        • 2.Rd7#
      • 1...Sd7
        • 2.Rxd7#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • S(d);N_GUARD::R(E)
    • S(d);N_GUARD::R(E),XS(d)
    • P(c);N_GUARD::R(D)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • R(E);
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • P(b);SBLOCK,XS(A)::QAR(B)
      • P(b);::QAR(B)
      • S(d);N_GUARD::R(E)
      • S(d);N_GUARD::R(E),XS(d)
      • P(c);N_GUARD::R(D)
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