MESON Chess Problem Database

Problem Display
PID: 270572 (6b1/8/p4b2/r2N4/rp4Pk/3Q4/1R5N/2B2K2 w - - 0 1)

Leach, EFH

Sunday Referee, 1931

(First published on Sun Dec 13 1931)

6b1/8/p4b2/r2N4/rp4Pk/3Q4/1R5N/2B2K2

#2

7 + 7

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sg2#
        • 2.Sg6#
      • 1...Kg5
        • 2.Sg2#
        • 2.Sg6#
      • 1...Rg5
        • 2.Sg2#
        • 2.Qh3#
      • 1...Bd5
        • 2.Sg6#
      • 1...Bf7
        • 2.Sg2#
      • 1...Bh7
        • 2.Sg2#
      • 1...Rf5!
    • 1.Rb3?
      • threat
        • 2.Qg3#
        • 2.Qh3#
      • 1...Be5
        • 2.Qh3#
      • 1...Bc3!
    • 1.Qh7+?
      • 1...Kg3
        • 2.Bf4#
        • 2.Rg2#
      • 1...Bxh7!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sg2#
      • 1...Rf5+
        • 2.Sxf5#
      • 1...Kg3
        • 2.Sf5#
      • 1...Kh3
        • 2.Sf5#
      • 1...Kg5
        • 2.Sg2#
      • 1...Bd5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::S(G)
      • Refutation
        • R(d);P_PINS(G)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAR1(E)
      • Refutation
        • B(f);
    • Try
      • Q(E);CHECK
      • Refutation
        • B(g);XQ(E)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(d);CHECK,N_GUARD::S(G),XR(d)
      • K(c);S_FLIGHT::QAR(E)+S(G),DCHECK
      • K(c);P-FLIGHT,S_CUTR(d)::QAR(E)+S(G)
      • K(c);S_FLIGHT::B(A)+S(G)
      • B(g);S_CUTR(d)::S(G)
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