MESON Chess Problem Database

Problem Display
PID: 48721 (7K/B7/2R2Q2/8/1p2N2R/1N1kp3/B3n3/4r2b w - - 0 1)

Grasemann, Herbert

4th HM., Gavrilov MT, 1947

7K/B7/2R2Q2/8/1p2N2R/1N1kp3/B3n3/4r2b

#2

8 + 6

461 Schach-Express 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Bxb1#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Sbc5#
        • 2.Sec5#
        • 2.Qc2#
      • 1...Bxe4
        • 2.Sc5#
        • 2.Qc2#
      • 1...Sf4
        • 2.Sbc5#
        • 2.Qc2#
      • 1...Sc3
        • 2.Sec5#
      • 1...Sd4
        • 2.Sbc5#
      • 1...Rc1!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qxe3#
      • 1...exf2
        • 2.Sxf2#
      • 1...Sf4
        • 2.Qc2#
      • 1...Sc1
        • 2.Bb1#
        • 2.Qc2#
      • 1...Sg1
        • 2.Qc2#
      • 1...Sc3
        • 2.Sec5#
      • 1...Sg3
        • 2.Qc2#
      • 1...Sd4
        • 2.Sbc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::B(A),XR(a)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(C)
        • S(c);::S(B)
      • Refutation
        • R(a);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F),XP(e)
    • Vars
      • P(e);XQ(F)::S(C),XP(e)
      • S(c);OGATE::QAB1(F)
      • S(c);SBLOCK::S(C)
      • S(c);SBLOCK::S(B)
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