MESON Chess Problem Database

Problem Display
PID: 264417 (8/q5p1/p2p4/1r1pkPNN/4P1K1/Q2R4/b2P1bB1/8 w - - 0 1)

Evans, TC

Sunday Referee, 1935

(First published on Sun Sep 29 1935)

8/q5p1/p2p4/1r1pkPNN/4P1K1/Q2R4/b2P1bB1/8

#2

9 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sf7#
    • 1...Qd4
      • 2.Sf7#
    • 1...Qc5
      • 2.Sf7#
    • 1...Qb6
      • 2.Sf7#
    • 1...Qb8
      • 2.Sf7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qa8
      • 2.Sf7#
    • 1...Rb3
      • 2.Rxd5#
    • 1...dxe4
      • 2.Qxd6#
  • Keys
    • 1.Rd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxd4
        • 2.Sf7#
      • 1...Bxd4
        • 2.Qg3#
      • 1...dxe4
        • 2.Qxd6#
      • 1...Rb3
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(h);N_GUARD::S(H)
    • Q(h);N_GUARD,P_PINP(E)::S(H)
    • Q(h);N_GUARD::S(H),XQ(h)
    • R(c);N_GUARD,S_CUTB(a)::R1(D),XP(d)
    • P(d);XP(E)::QAB1(C),XP(g)
  • Actual
    • R(D);
    • Threat
      • S(H)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • Q(h);N_GUARD,P_PINP(E),SBLOCK,XR(D)::S(H)
      • B(b);N_GUARD,SBLOCK,XR(D)::QAB(C)
      • P(d);XP(E)::QAB1(C),XP(g)
      • R(c);N_GUARD,S_CUTB(a)::R1(D),XP(d)
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