MESON Chess Problem Database

Problem Display
PID: 180376 (R6B/8/1p6/1K6/pNN5/1kp5/1b6/7R w - - 0 1)

Lider, Valentin Viktorovich

diagrammes, 1977

R6B/8/1p6/1K6/pNN5/1kp5/1b6/7R

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2+?
      • 1...Ka3
        • 2.Rxa4#
      • 1...cxd2!
    • 1.Rh3?
      • 1...Bc1
        • 2.Rxc3#
      • 1...Ba3
        • 2.Rxc3#
      • 1...a3
        • 2.Sd2#
      • 1...Ba1!
    • 1.Rxa4?
      • 1...Ba1
        • 2.Ra3#
      • 1...Ba3
        • 2.Rxa3#
      • 1...c2
        • 2.Sd2#
      • 1...Bc1!
  • Keys
    • 1.Rb1!
      • 1...c2
        • 2.Rxb2#
      • 1...a3
        • 2.Rxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(d)::R1(E),XP(d)
      • Refutation
        • P(c);XS(C)
    • Try
      • R(A);P_PINP(c)
      • Vars
        • B(a);N_GUARD::R1(A),XP(c)
        • P(d);::S(C)
      • Refutation
        • B(a);
    • Try
      • R(E);XP(d)
      • Vars
        • B(a);N_GUARD::R1(E)
        • B(a);N_GUARD::R1(E),XB(a)
        • P(c);N_GUARD::S(C)
      • Refutation
        • B(a);
  • Actual
    • R(A);P_PINB(a)
    • Vars
      • P(c);N_GUARD::R1(A),XB(a)
      • P(d);OGATE::R1(E),XP(d)
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