MESON Chess Problem Database

Problem Display
PID: 232932 (8/8/4R3/4Q3/1K6/3p4/2N5/3k4 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2006

8/8/4R3/4Q3/1K6/3p4/2N5/3k4

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...dxc2
      • 2.Qe1#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qe1#
      • 1...Kc1
        • 2.Qe1#
      • 1...d2!
    • 1.Sa3?
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Qe1#
      • 1...d2
        • 2.Qa1#
      • 1...Kc1!
    • 1.Qc3?
      • threat
        • 2.Re1#
      • 1...Kc1
        • 2.Re1#
      • 1...d2!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qe1#
      • 1...Kc1
        • 2.Qe1#
      • 1...Kd2
        • 2.Qe1#
      • 1...d2
        • 2.Qa1#

FEATURES

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