MESON Chess Problem Database

Problem Display
PID: 239258 (8/3B4/5p1K/r3k3/nQ3N2/7n/3N2b1/6r1 w - - 0 1)

Makaronets, Leonid

Sachove umeni (Ceskoslovensky sach), 1975

8/3B4/5p1K/r3k3/nQ3N2/7n/3N2b1/6r1

#2

5 + 7

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sg6#
    • 1...Bf1
      • 2.Sf3#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Bd5
      • 2.Sd3#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qd4#
      • 1...Be4
        • 2.Qb8#
      • 1...Rd5
        • 2.Sg6#
      • 1...Bd5
        • 2.Sd3#
      • 1...Rd1!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
      • 1...Rd5
        • 2.Qe7#
      • 1...Bd5
        • 2.Qb8#

Anticipated by 86697(1968)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);SBLOCK::S(C)
    • B(b);N_GUARD::S(A)
    • B(b);N_GUARD::S(A),XB(b)
    • B(b);SBLOCK::S(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • B(b);SBLOCK::QAB(B)
        • R(e);SBLOCK::S(C)
        • B(b);SBLOCK::S(C)
      • Refutation
        • R(a);
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(f);P-FLIGHT::QAR1(B)
      • R(e);SBLOCK::QAR2(B)
      • B(b);SBLOCK::QAB(B)
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