MESON Chess Problem Database

Problem Display
PID: 267605 (8/1R1r4/1b6/R3p3/r3p3/2NP2p1/4NkPp/2Q4K w - - 0 1)

Stevenson, Edward

Sunday Referee, 1939

(First published on Sun May 7 1939)

8/1R1r4/1b6/R3p3/r3p3/2NP2p1/4NkPp/2Q4K

#2

8 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rf7#
    • 1...Rd5
      • 2.Rf7#
    • 1...Rf7
      • 2.Rxf7#
    • 1...Rd8
      • 2.Rf7#
  • Tries
    • 1.Sg1?
      • threat
        • 2.Sh3#
      • 1...hxg1Q+
        • 2.Qxg1#
      • 1...hxg1R+
        • 2.Qxg1#
      • 1...hxg1S
        • 2.Qxg1#
      • 1...hxg1B
        • 2.Qxg1#
      • 1...Rh7!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sxe4#
      • 1...Raxd4
        • 2.Ra2#
      • 1...Rdxd4
        • 2.Rf7#
      • 1...Bxd4
        • 2.Rb2#
      • 1...exd3
        • 2.Se4#
      • 1...exd4
        • 2.Rf5#
      • 1...e3
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(h);OGATE::R(H)
    • R(h);OGATE::R(H),XR(h)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(b);CHECK,OGATE,XS(C)::QAB1(A),XQ(b)
        • P(b);CHECK,OGATE,XS(C)::QAB1(A),XR(b)
        • P(b);OGATE,XS(C)::QAB1(A),XS(b)
        • P(b);OGATE,XS(C)::QAB1(A),XB(b)
      • Refutation
        • R(h);
  • Actual
    • S(C);
    • Threat
      • S(E),XP(e)
    • Vars
      • R(d);OGATE,XS(C)::R(G)
      • R(h);OGATE,XS(C)::R(H)
      • B(g);OGATE,XS(C)::R(H)
      • P(e);XP(F)::S(E)
      • P(f);OGATE,XS(C)::R(G)
      • P(e);::S(E)
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