MESON Chess Problem Database

Problem Display
PID: 226740 (8/1K6/R2N1b2/pp1k1P2/r1N2r1n/1bPp4/6nB/4R1QB w - - 0 1)

Conway-Poole, IM

Sunday Chronicle, 1946

(First published on Sun Mar 3 1946)

8/1K6/R2N1b2/pp1k1P2/r1N2r1n/1bPp4/6nB/4R1QB

#2

10 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sb6#
    • 1...Rf3
      • 2.Sb6#
    • 1...Re4
      • 2.Sb6#
    • 1...Rg4
      • 2.Sb6#
    • 1...Rxf5
      • 2.Sb6#
    • 1...Be5
      • 2.Rxe5#
    • 1...Bg5
      • 2.Re5#
    • 1...Be7
      • 2.Re5#
    • 1...Bd8
      • 2.Re5#
  • Tries
    • 1.Se3+?
      • 1...Kc5
        • 2.Rc6#
      • 1...Ke5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qc5#
      • 1...Kxc4
        • 2.Qc5#
      • 1...Rxc4
        • 2.Sxf6#
      • 1...Rxe4
        • 2.Sb6#
      • 1...Rf2
        • 2.Sb6#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Be7
        • 2.Qd4#
      • 1...Se3
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • R(e);::S(F)
    • R(e);N_SPINS(a)::S(F)
    • R(e);XP(G)::S(F)
    • B(j);N_GUARD::R1(A),XB(j)
    • B(j);N_GUARD::R1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINS(a),P-FLIGHT::R1(H)
      • Refutation
        • K(i);N_SPINS(a),P-FLIGHT,P_SPINR(e)
  • Actual
    • S(I);N_PINS(a)
    • Threat
      • QAR1(B)
    • Vars
      • K(i);S_FLIGHT,XS(F)::QAR1(B)
      • R(d);SBLOCK,XS(F)::S(I),XB(j)
      • R(e);XS(I)::S(F)
      • R(e);::S(F)
      • B(j);N_GUARD::QAR1(B),XB(j)
      • B(j);N_GUARD::QAR1(B)
      • S(a);OGATE::QAB(B)
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