MESON Chess Problem Database

Problem Display
PID: 222566 (3b4/8/Q7/2R1p3/4kN2/4N1P1/8/1K6 w - - 0 1)

Gold, Samuel

Deutsche Schachzeitung, 1884

3b4/8/Q7/2R1p3/4kN2/4N1P1/8/1K6

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qd3#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd4
        • 2.Rc4#
        • 2.Qc4#
      • 1...Kf5
        • 2.Qg6#
      • 1...exf4!
    • 1.Sc2?
      • threat
        • 2.Qd3#
      • 1...Kf5
        • 2.Qg6#
      • 1...exf4
        • 2.Qe2#
      • 1...Kf3!
    • 1.Qe2?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Rc4#
      • 1...exf4
        • 2.Sc2#
        • 2.Sf5#
      • 1...Bb6!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Sc2#
        • 2.Sf5#
      • 1...Kxe3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd3#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxf5
        • 2.Qg6#
      • 1...exf4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(F)
      • Refutation
        • P(b);XS(D)
    • Try
      • S(B);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(F)
        • P(b);XS(D)::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • R(E)
      • Vars
        • K(a);P-FLIGHT::R1(E)
      • Refutation
        • B(c);
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB1(F)
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(B)::QAB1(F)
      • P(b);XS(D)::QAR2(F)
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