MESON Chess Problem Database

Problem Display
PID: 206368 (8/8/8/7p/4k2K/3pN1P1/B2Q4/8 w - - 0 1)

Kofman, Rafael Moiseevich

Revista de Sah, 1925

8/8/8/7p/4k2K/3pN1P1/B2Q4/8

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Bd5#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kd4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kf5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf5
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B)
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);S_FLIGHT::B(A)
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B)
      • K(b);S_FLIGHT::QAB(B),XP(a)
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