MESON Chess Problem Database

Problem Display
PID: 225148 (8/2K5/k7/2R5/p1R5/8/1Pb5/8 w - - 0 1)

Vaisanen, Kauko

Suomen Shakki, 1998

8/2K5/k7/2R5/p1R5/8/1Pb5/8

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Ra5#
    • 1...Bb1
      • 2.Rxa4#
    • 1...Bd3
      • 2.Rxa4#
    • 1...Be4
      • 2.Rxa4#
    • 1...Bf5
      • 2.Rxa4#
    • 1...Bg6
      • 2.Rxa4#
    • 1...Bh7
      • 2.Rxa4#
  • Tries
    • 1.Rxc2?
      • 1...Ka7
        • 2.Ra5#
      • 1...a3!
    • 1.b3?
      • threat
        • 2.Rxa4#
      • 1...Ka7
        • 2.Rxa4#
        • 2.Ra5#
      • 1...axb3
        • 2.Ra4#
      • 1...a3
        • 2.Ra4#
      • 1...Bxb3!
  • Keys
    • 1.b4!
      • threat
        • 2.Ra5#
      • 1...Ka7
        • 2.Ra5#
      • 1...axb4 ep
        • 2.Ra4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(c);P-FLIGHT::R(C)
    • B(a);N_GUARD::R(B),XP(b)
  • Tries
    • Try
      • R(B);XB(a)
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • P(b);
    • Try
      • P(A);
      • Threat
        • R(B),XP(b)
      • Vars
        • P(b);XP(A)::R(B)
        • P(b);::R(B)
      • Refutation
        • B(a);XP(A)
  • Actual
    • P(A);
    • Threat
      • R1(C)
    • Vars
      • K(c);P-FLIGHT::R(C)
      • P(b);EP,OGATE,XP(A)::R(B)
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