MESON Chess Problem Database

Problem Display
PID: 231100 (B7/1R6/8/2K5/k7/8/1p6/bN6 w - - 0 1)

Onitiu, Valerian

Magyar Sakkvilag, 1927

B7/1R6/8/2K5/k7/8/1p6/bN6

#2

4 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Ra7#
  • Tries
    • 1.Sc3+?
      • 1...Ka5
        • 2.Ra7#
      • 1...Ka3!
    • 1.Rxb2?
      • 1...Ka5
        • 2.Ra2#
      • 1...Bxb2!
    • 1.Rb3?
      • threat
        • 2.Ra3#
      • 1...Ka5
        • 2.Ra3#
      • 1...Kxb3!
    • 1.Rc7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
    • 1.Rd7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
    • 1.Re7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
    • 1.Rf7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
    • 1.Rg7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
    • 1.Rh7?
      • 1...Ka5
        • 2.Ra7#
      • 1...Kb3!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Ra7#
      • 1...Ka3
        • 2.Ra7#
      • 1...Ka5
        • 2.Ra7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::R(C)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);XP(b)
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • B(a);XR(C)
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • R(C)
    • Vars
      • K(c);P-FLIGHT::R(C)
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