MESON Chess Problem Database

Problem Display
PID: 208193 (8/5Kb1/6N1/5kpr/4R3/6p1/B4nP1/8 w - - 0 1)

Topfer, PG

Dubuque Chess Journal, 1875

8/5Kb1/6N1/5kpr/4R3/6p1/B4nP1/8

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.Be6#
  • Tries
    • 1.Re1?
      • threat
        • 2.Be6#
      • 1...Kg4
        • 2.Be6#
      • 1...g4!
    • 1.Re2?
      • threat
        • 2.Be6#
      • 1...Kg4
        • 2.Be6#
      • 1...g4!
    • 1.Re3?
      • threat
        • 2.Be6#
      • 1...Kg4
        • 2.Be6#
      • 1...g4!
    • 1.Re5+?
      • 1...Kg4
        • 2.Be6#
      • 1...Bxe5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Be6#
      • 1...Kxg4
        • 2.Be6#
      • 1...Sxg4
        • 2.Bb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK,XR(C)::B(A)
  • Tries
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • P(d);
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • P(d);
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • P(d);
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • B(f);XR(C)
  • Actual
    • R(C);
    • Threat
      • B(A)
    • Vars
      • K(c);S_FLIGHT,XR(C)::B(A)
      • S(a);N_GUARD,SBLOCK,XR(C)::B(A)
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