MESON Chess Problem Database

Problem Display
PID: 196898 (8/8/7R/2kN4/K1P3R1/2P1nBq1/8/8 w - - 0 1)

Schneider, Otto Carl

American Chess Bulletin, 1919

8/8/7R/2kN4/K1P3R1/2P1nBq1/8/8

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sd3#
        • 2.Sa6#
        • 2.Rc6#
      • 1...Qxf3
        • 2.Sd3#
        • 2.Sa6#
      • 1...Qxg4
        • 2.Rc6#
      • 1...Sxg4
        • 2.Rc6#
      • 1...Qf4
        • 2.Rc6#
      • 1...Qc7
        • 2.Sd3#
        • 2.Sa6#
      • 1...Qd6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sd3#
        • 2.Rc6#
      • 1...Kxc4
        • 2.Rc6#
      • 1...Qxf4
        • 2.Rc6#
      • 1...Qxf3
        • 2.Sd3#
      • 1...Qxg4
        • 2.Rc6#
      • 1...Sxg4
        • 2.Rc6#
      • 1...Sd5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);XR(E)::R1(G)
        • S(a);XR(E)::R1(G)
        • Q(b);::R1(G)
      • Refutation
        • Q(b);
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P-FLIGHT,XP(D)::R(G)
      • Q(b);P_PINP(D),XS(F)::R1(G)
      • Q(b);XB(B)::S(F)
      • Q(b);XR(E)::R1(G)
      • S(a);XR(E)::R1(G)
      • S(a);::S(F)
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