MESON Chess Problem Database

Problem Display
PID: 208740 (8/5Kp1/5P1p/5k2/1Q6/4R3/8/8 w - - 0 1)

Carpenter, George Edward

Dubuque Chess Journal, 1875

8/5Kp1/5P1p/5k2/1Q6/4R3/8/8

#2

4 + 3

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Re5#
    • 1...g5
      • 2.Qe4#
  • Tries
    • 1.Kxg7?
      • 1...Kg5
        • 2.Re5#
      • 1...h5!
    • 1.Rc3?
      • threat
        • 2.Rc5#
      • 1...Kg5
        • 2.Rc5#
      • 1...Ke5!
    • 1.Rd3?
      • threat
        • 2.Rd5#
      • 1...Kg5
        • 2.Rd5#
      • 1...Ke5!
    • 1.Qd4?
      • threat
        • 2.Re5#
      • 1...Kg5
        • 2.Re5#
      • 1...gxf6!
    • 1.fxg7?
      • 1...Kg5
        • 2.Re5#
      • 1...h5!
  • Keys
    • 1.Ra3!
      • threat
        • 2.Ra5#
      • 1...Ke5
        • 2.Ra5#
      • 1...Kg5
        • 2.Ra5#

This anticipates 241997(1933), 11701(1971)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(A)
    • P(c);SBLOCK::QAB1(B)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(c)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • R1(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(c);XP(C)
    • Try
      • P(C);XP(c)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • K(a);P-FLIGHT::R(A)
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