MESON Chess Problem Database

Problem Display
PID: 137257 (7k/5Kp1/6P1/3p4/3R1b2/8/3R3p/8 w - - 0 1)

Earl of Perth

The Field, 1924

(First published on Thu Sep 11 1924)

7k/5Kp1/6P1/3p4/3R1b2/8/3R3p/8

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rh4#
    • 1...Bd6
      • 2.Rh4#
    • 1...Bc7
      • 2.Rh4#
    • 1...Bb8
      • 2.Rh4#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Rc8#
      • 1...Bd6
        • 2.Rh4#
      • 1...Bc7
        • 2.Rh4#
      • 1...Bg5!
    • 1.Re2?
      • threat
        • 2.Re8#
      • 1...Be5
        • 2.Rh4#
      • 1...Bd6
        • 2.Rh4#
      • 1...Be3!
    • 1.Rxh2+?
      • 1...Bxh2
        • 2.Rh4#
      • 1...Bh6!
    • 1.Rc4?
      • threat
        • 2.Rc8#
      • 1...dxc4
        • 2.Rd8#
      • 1...Bd6
        • 2.Rh4#
      • 1...Bc7
        • 2.Rh4#
      • 1...Bg5!
    • 1.Rxd5?
      • threat
        • 2.Rd8#
      • 1...Bd6
        • 2.Rh5#
      • 1...Bc7
        • 2.Rh5#
      • 1...Bg5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Re8#
      • 1...dxe4
        • 2.Rd8#
      • 1...Be5
        • 2.Rh4#
      • 1...Bd6
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATE::R(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • B(b);OGATE::R(B)
      • Refutation
        • B(b);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • B(b);OGATE::R(B)
      • Refutation
        • B(b);
    • Try
      • R(A);CHECK,XP(a)
      • Vars
        • B(b);OGATE,XR(A)::R(B)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(c);OGATE,XR(B)::R(A)
        • B(b);OGATE::R(B)
      • Refutation
        • B(b);
    • Try
      • R(B);XP(c)
      • Threat
        • R(B)
      • Vars
        • B(b);N_GUARD::R(B)
      • Refutation
        • B(b);
  • Actual
    • R(B);
    • Threat
      • R(B)
    • Vars
      • P(c);OGATE,XR(B)::R(A)
      • B(b);OGATE::R(B)
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