MESON Chess Problem Database

Problem Display
PID: 190205 (3N4/2P1k1P1/1N5K/4pR2/6P1/8/8/8 w - - 0 1)

Papp, Istvan

Pesti Naplo, 1913

3N4/2P1k1P1/1N5K/4pR2/6P1/8/8/8

#2

7 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Rxe5#
  • Tries
    • 1.Rxe5+?
      • 1...Kf6
        • 2.Sd7#
        • 2.Re6#
      • 1...Kd6!
    • 1.Rf7+?
      • 1...Ke8
        • 2.g8Q#
        • 2.g8R#
      • 1...Kd6!
    • 1.c8Q?
      • threat
        • 2.Qd7#
      • 1...Ke8
        • 2.Sc6#
        • 2.Rxe5#
        • 2.Qd7#
      • 1...Kd6!
    • 1.c8S+?
      • 1...Ke8
        • 2.Rf8#
        • 2.g8Q#
        • 2.g8R#
      • 1...Kxd8!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Re6#
      • 1...Kxf6
        • 2.Sd5#
        • 2.g8S#
      • 1...Ke8
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(B),XP(a)
  • Tries
    • Try
      • R(B);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(G)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(b);P-FLIGHT::R(B)
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