MESON Chess Problem Database

Problem Display
PID: 149463 (8/8/1r6/1nQ5/kN6/3R4/1K6/8 w - - 0 1)

Deiss, Edward L

The Chess Review, 1937

8/8/1r6/1nQ5/kN6/3R4/1K6/8

#2

4 + 3

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Ra3#
    • 1...Sa3
      • 2.Rxa3#
    • 1...Sd4
      • 2.Ra3#
    • 1...Sd6
      • 2.Ra3#
    • 1...Sa7
      • 2.Ra3#
    • 1...Sc7
      • 2.Ra3#
  • Tries
    • 1.Qxb6?
      • 1...Kxb4
        • 2.Rd4#
      • 1...Sa3
        • 2.Rxa3#
      • 1...Sd4
        • 2.Ra3#
      • 1...Sd6
        • 2.Ra3#
      • 1...Sa7
        • 2.Ra3#
      • 1...Sc7
        • 2.Ra3#
      • 1...Sc3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qb4#
      • 1...Sa3+
        • 2.Sxb6#
      • 1...Sc3+
        • 2.Sxb6#
      • 1...Sd4+
        • 2.Sxb6#
      • 1...Sd6+
        • 2.Sxb6#
      • 1...Sa7+
        • 2.Sxb6#
      • 1...Sc7+
        • 2.Sxb6#
      • 1...Ka5
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::R(B)
    • S(b);N_GUARD,P_PINS(C)::R1(B),XS(b)
    • S(b);N_GUARD,P_PINS(C)::R1(B)
  • Tries
    • Try
      • Q(D);XR(c)
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINS(b),XS(C)::R(B)
        • S(b);N_GUARD::R1(B),XS(b)
        • S(b);N_GUARD::R1(B)
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • QAR1(D)
    • Vars
      • S(b);CHECK::S(C),XR(c)
      • K(a);P-FLIGHT,P_SPINS(b)::R(B)
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