MESON Chess Problem Database

Problem Display
PID: 22734 (8/8/6R1/3k4/KPpppP2/8/2P5/4Q3 w - - 0 1)

Srinivasan, D

L'Italia Scacchistica, 1998

8/8/6R1/3k4/KPpppP2/8/2P5/4Q3

#2

6 + 4

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qh1#
  • Tries
    • 1.Qf2?
      • 1...e3
        • 2.Qg2#
        • 2.Qf3#
      • 1...d3
        • 2.Qc5#
      • 1...c3!
    • 1.Qh4?
      • threat
        • 2.Qg5#
        • 2.Qd8#
        • 2.Qh5#
      • 1...d3
        • 2.Qd8#
      • 1...e3
        • 2.Qh1#
      • 1...c3!
    • 1.Qb1?
      • 1...c3
        • 2.Qa2#
        • 2.Qb3#
      • 1...e3
        • 2.Qh1#
      • 1...d3!
    • 1.Qf1?
      • 1...e3
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...c3
        • 2.Qb5#
      • 1...d3!
    • 1.Qg1?
      • threat
        • 2.Qg5#
      • 1...e3
        • 2.Qh1#
        • 2.Qg2#
      • 1...d3
        • 2.Qc5#
      • 1...c3!
    • 1.Qe2?
      • threat
        • 2.Qh5#
      • 1...e3
        • 2.Qf3#
        • 2.Qg2#
      • 1...c3
        • 2.Qb5#
      • 1...d3!
    • 1.c3?
      • 1...dxc3
        • 2.Qd1#
      • 1...e3
        • 2.Qh1#
      • 1...d3!
  • Keys
    • 1.Qa1!
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qh1#
      • 1...d3
        • 2.Qe5#

This anticipates 155232(2000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAR(A)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(a);OGATE::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(b);OGATE::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(a);OGATE::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • P(B);
      • Vars
        • P(b);OGATEB,XP(B)::QAR(A)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • P(a);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
      • P(b);OGATE::QAR1(A)
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