MESON Chess Problem Database

Problem Display
PID: 119946 (8/8/8/8/4N3/8/KR4Pr/3B1kN1 w - - 0 1)

Ferber, Eugene

Deutsche Schachzeitung, 1910

8/8/8/8/4N3/8/KR4Pr/3B1kN1

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sg3#
        • 2.Rf2#
      • 1...Rh3
        • 2.Rf2#
      • 1...Rxg2!
    • 1.Bf3?
      • threat
        • 2.Rb1#
      • 1...Ke1
        • 2.Rb1#
      • 1...Kxg1
        • 2.Rb1#
      • 1...Rxg2!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Bf3#
      • 1...Rxg2+
        • 2.Bc2#
        • 2.Be2#
      • 1...Ke1
        • 2.Bc2#
        • 2.Be2#
        • 2.Bb3#
        • 2.Bf3#
        • 2.Ba4#
        • 2.Bg4#
        • 2.Bh5#
      • 1...Kxg1
        • 2.Bf3#
      • 1...Kxg2
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::R1(D)
      • Refutation
        • R(b);P_PINR(D),XP(E)
    • Try
      • B(A);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
        • K(a);P-FLIGHT,XS(B)::R(D)
      • Refutation
        • R(b);P_PINR(D),XP(E)
  • Actual
    • R(D);P_SPINP(E)
    • Threat
      • R(D)+B(A)
    • Vars
      • K(a);P-FLIGHT,XS(B)::R(D)+B(A)
      • K(a);S_FLIGHT,XP(E)::B(A)
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