MESON Chess Problem Database

Problem Display
PID: 270243 (2BQ2K1/5R1P/r1p3p1/4k1P1/7r/3P1bp1/2N1pPpq/6b1 w - - 0 1)

Boswell, Edward

Sunday Referee, 1931

(First published on Sun May 17 1931)

2BQ2K1/5R1P/r1p3p1/4k1P1/7r/3P1bp1/2N1pPpq/6b1

#2

9 + 11

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rh3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Rf4
      • 2.Re7#
    • 1...Rh5
      • 2.Qd4#
    • 1...Rh6
      • 2.Qd4#
    • 1...Rxh7
      • 2.Qd4#
    • 1...Be4
      • 2.Qd4#
      • 2.d4#
    • 1...Bg4
      • 2.Qd4#
      • 2.f4#
    • 1...Bd5
      • 2.Qf6#
      • 2.Qc7#
    • 1...Bh5
      • 2.h8Q#
      • 2.h8B#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qf6#
      • 1...Rf4
        • 2.Re7#
      • 1...c5!
    • 1.d4+?
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Ke4!
  • Keys
    • 1.Se1!
      • threat
        • 2.Sxf3#
      • 1...Bd5
        • 2.Qf6#
      • 1...Rf4
        • 2.Re7#
      • 1...Be4
        • 2.d4#
      • 1...Bg4
        • 2.f4#
      • 1...Bh5
        • 2.h8Q#
        • 2.h8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD::QAB1(H)
    • R(g);N_GUARD::QAB1(H),XR(g)
    • R(g);SBLOCK::R(E)
    • R(g);N_GUARD,XP(F)::QAB1(H)
    • B(e);S_CUTR(g)::P=Q
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(H)
      • Vars
        • R(g);SBLOCK::R(E)
      • Refutation
        • P(j);
    • Try
      • P(C);CHECK
      • Vars
        • R(g);OGATE,XP(C)::QAB1(H),XR(g)
      • Refutation
        • K(h);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(A),XB(e)
    • Vars
      • B(e);P_PINR(E),SBLOCK::QAB1(H)
      • R(g);SBLOCK::R(E)
      • B(e);SBLOCK,S_CUTR(g)::P(C)
      • B(e);OGATE::P(B)
      • B(e);S_CUTR(g)::P=Q
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