MESON Chess Problem Database

Problem Display
PID: 153222 (8/8/3Rn3/p7/1k6/3Q4/K2b4/8 w - - 0 1)

Diaz, Walter Alejandro

de Haas, Bastian Evert

6th HM., StrateGems 02. Miniature Ty., 2011

8/8/3Rn3/p7/1k6/3Q4/K2b4/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qb3#
    • 1...Sc5
      • 2.Rd4#
  • Tries
    • 1.Rb6+?
      • 1...Ka4
        • 2.Qc2#
        • 2.Qb5#
        • 2.Qa3#
        • 2.Qb3#
        • 2.Qd7#
      • 1...Kc5!
    • 1.Qb5+?
      • 1...Kc3
        • 2.Qb3#
      • 1...Kxb5!
    • 1.Qd4+?
      • 1...Kb5
        • 2.Rb6#
      • 1...Sxd4!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qb3#
      • 1...Ka4
        • 2.Qb5#
        • 2.Qa3#
        • 2.Qb3#
      • 1...Bc3
        • 2.Qb5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...a4
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAB1(B)
    • S(d);N_GUARD,SBLOCK::R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(C)
      • Refutation
        • S(d);XQ(B)
  • Actual
    • R(C);
    • Threat
      • QAR1(B)
    • Vars
      • B(a);SBLOCK::QAR1(B)
      • S(d);N_GUARD::QAR2(B),XS(d)
      • S(d);N_GUARD,SBLOCK::R(C)
      • P(c);SBLOCK::R1(C)
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