MESON Chess Problem Database

Problem Display
PID: 2496 (1Q6/8/n6B/4b3/1r5p/3P1N2/5k1P/3R2NK w - - 0 1)

Loyd, Sam

Source?, 0000

1Q6/8/n6B/4b3/1r5p/3P1N2/5k1P/3R2NK

#2

8 + 5

1679 American Chess Nuts 1868
5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qb2#
    • 1...Bxh2
      • 2.Qxh2#
  • Tries
    • 1.Qxe5?
      • threat
        • 2.Be3#
        • 2.Qe1#
        • 2.Qe2#
        • 2.Qe3#
      • 1...Rf4
        • 2.Qe1#
        • 2.Qe2#
      • 1...Rb2
        • 2.Be3#
        • 2.Qxb2#
        • 2.Qd4#
        • 2.Qe1#
        • 2.Qe3#
      • 1...Re4!
    • 1.Qxb4?
      • threat
        • 2.Qe1#
        • 2.Qd2#
      • 1...Bxh2
        • 2.Qe1#
      • 1...Bf4
        • 2.Qe1#
      • 1...Bc3
        • 2.Qxh4#
      • 1...Sxb4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sh3#
      • 1...Rxd4
        • 2.Qb2#
      • 1...Bxd4
        • 2.Qf4#
      • 1...Bf4
        • 2.Qxf4#
      • 1...h3
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::QAR(H)
    • B(d);OGATE,XP(D)::QAR2(H),XB(d)
  • Tries
    • Try
      • Q(H);XB(d)
      • Threat
        • DUALS(4)
      • Refutation
        • R(b);
    • Try
      • Q(H);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XP(D)::QAB1(H)
        • B(d);::QAB1(H)
        • B(d);N_GUARD::QAB(H),XP(c)
      • Refutation
        • S(e);XQ(H)
  • Actual
    • S(F);
    • Threat
      • S(B)
    • Vars
      • R(b);OGATE,XS(F)::QAR(H)
      • B(d);OGATE,XS(F)::QAR2(H)
      • B(d);OGATE::QAR2(H),XB(d)
      • P(c);::S(B),XP(c)
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