MESON Chess Problem Database

Problem Display
PID: 268450 (8/6N1/8/5NRp/1p2bk1p/1Pn2P1K/4P3/B3Q3 w - - 0 1)

Anderson, WS

Sunday Referee, 1929

(First published on Sun Jul 28 1929)

8/6N1/8/5NRp/1p2bk1p/1Pn2P1K/4P3/B3Q3

#2

9 + 6

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Se6#
      • 2.Qxh4#
    • 1...Sd1
      • 2.Se6#
      • 2.Qxh4#
    • 1...Sa2
      • 2.Se6#
      • 2.Qd2#
      • 2.Qxh4#
    • 1...Sa4
      • 2.Se6#
      • 2.Qd2#
      • 2.Qxh4#
      • 2.Qc1#
    • 1...Sb5
      • 2.Se6#
      • 2.Qd2#
      • 2.Qxh4#
      • 2.Qc1#
    • 1...Sd5
      • 2.Se6#
      • 2.Qxh4#
  • Tries
    • 1.Qg1?
      • 1...Bxf5+
        • 2.Rxf5#
      • 1...Bxf3
        • 2.Qe3#
      • 1...Sxe2
        • 2.Qe3#
      • 1...Bb1
        • 2.Qe3#
      • 1...Bc2
        • 2.Qe3#
      • 1...Bd3
        • 2.Qe3#
      • 1...Bd5
        • 2.Qe3#
      • 1...Bc6
        • 2.Qe3#
      • 1...Bb7
        • 2.Qe3#
      • 1...Ba8
        • 2.Qe3#
      • 1...Sb1
        • 2.Sxh5#
        • 2.Se6#
        • 2.Qe3#
      • 1...Sd1
        • 2.Sxh5#
        • 2.Se6#
      • 1...Sa2
        • 2.Sxh5#
        • 2.Se6#
        • 2.Qe3#
      • 1...Sa4
        • 2.Sxh5#
        • 2.Se6#
        • 2.Qe3#
        • 2.Qc1#
      • 1...Sb5
        • 2.Sxh5#
        • 2.Se6#
        • 2.Qe3#
        • 2.Qc1#
      • 1...Sd5
        • 2.Sxh5#
        • 2.Se6#
      • 1...Ke5!
  • Keys
    • 1.Qd2+!
      • 1...Ke5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • B(c);CHECK,OGATE,XS(G)::R1(H),XB(c)
        • B(c);XP(E)::QAB1(B)
        • S(a);XP(C)::QAB1(B)
        • B(c);::QAB1(B)
      • Refutation
        • K(d);P_SPINS(a),S_FLIGHT
  • Actual
    • Q(B);CHECK
    • Vars
      • K(d);N_GUARD,P_SPINS(a),S_FLIGHT::QAB1(B)
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