MESON Chess Problem Database

Problem Display
PID: 210910 (6B1/6n1/4r2B/Q3N1N1/3k3r/8/4R3/b2K3b w - - 0 1)

Schrader, Carl

Deutsche Schachblatter, 1940

6B1/6n1/4r2B/Q3N1N1/3k3r/8/4R3/b2K3b

#2

7 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qb4#
    • 1...Rd6
      • 2.Qb4#
    • 1...Rf6
      • 2.Qb4#
    • 1...Rg6
      • 2.Qb4#
    • 1...Rxh6
      • 2.Qb4#
    • 1...Re7
      • 2.Qb4#
    • 1...Re8
      • 2.Qb4#
    • 1...Bf3
      • 2.Sgxf3#
    • 1...Sf5
      • 2.Sxe6#
    • 1...Sh5
      • 2.Sxe6#
    • 1...Se8
      • 2.Sxe6#
  • Keys
    • 1.Se4!
      • threat
        • 2.Qc5#
      • 1...Rxe4
        • 2.Rd2#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Bxe4
        • 2.Be3#
      • 1...Rc6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • R(e);::QAR2(C)
    • R(e);XB(F)::QAR2(C)
    • B(b);N_GUARD,P_PINR(B)::S(E),XB(b)
    • S(f);N_GUARD::S(E),XR(e)
  • Actual
    • S(E);
    • Threat
      • QAB1(C)
    • Vars
      • R(d);SBLOCK,XS(E)::R(B)
      • R(e);SBLOCK,XS(D)::QAR2(C)
      • B(b);SBLOCK,XS(E)::B(F)
      • R(e);::QAR1(C)
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