MESON Chess Problem Database

Problem Display
PID: 241389 (8/7b/2B1p3/4R2q/1p1k2n1/bPNrp2n/K2p4/4NQ2 w - - 0 1)

Hjelle, David

Revista Romana de Sah, 1947

8/7b/2B1p3/4R2q/1p1k2n1/bPNrp2n/K2p4/4NQ2

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sf3#
    • 1...bxc3
      • 2.Sf3#
  • Tries
    • 1.Qf4+?
      • 1...Kxc3
        • 2.Qc4#
      • 1...Be4
        • 2.Se2#
        • 2.Sb5#
      • 1...Sxf4!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc5#
      • 1...Kxc3
        • 2.Qc5#
      • 1...Kxe5
        • 2.Sf3#
      • 1...Qxe5
        • 2.Se2#
      • 1...Rxc3
        • 2.Qd6#
      • 1...Sxe5
        • 2.Sb5#
      • 1...bxc3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK,XS(E)::S(A)
    • P(f);SBLOCK,XS(E)::S(A)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);OGATE,S_FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • S(e);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(g);S_FLIGHT,XS(E)::QAR2(B)
      • K(g);S_FLIGHT,XR(F)::S(A)
      • Q(i);SBLOCK,XR(F)::S(E)
      • R(c);SBLOCK,XS(E)::QAR2(B)
      • S(h);SBLOCK,XR(F)::S(E)
      • P(f);SBLOCK,XS(E)::S(A)
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