MESON Chess Problem Database

Problem Display
PID: 232935 (R1K2b2/8/1pk5/6Q1/N7/8/8/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2010

R1K2b2/8/1pk5/6Q1/N7/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Ra6#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qd5#
      • 1...b5
        • 2.Ra6#
      • 1...Kd6!
    • 1.Rb8?
      • threat
        • 2.Rxb6#
      • 1...Kd6
        • 2.Rxb6#
      • 1...b5
        • 2.Rb6#
      • 1...Bc5!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Rxb6#
      • 1...Kd6
        • 2.Rxb6#
      • 1...Bc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::R(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • P(a);OGATEB::R(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • R1(C),XP(a)
      • Vars
        • K(b);P-FLIGHT::R(C),XP(a)
        • P(a);::R1(C)
      • Refutation
        • B(c);
  • Actual
    • R(C);P_PINP(a)
    • Threat
      • R1(C),XP(a)
    • Vars
      • K(b);P-FLIGHT::R(C),XP(a)
      • B(c);N_GUARD::QAR1(B),XB(c)
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