MESON Chess Problem Database

Problem Display
PID: 194321 (K4n1B/1p4q1/8/5P2/2P4b/R1p5/1k2n1Q1/R7 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2019

K4n1B/1p4q1/8/5P2/2P4b/R1p5/1k2n1Q1/R7

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Qxe2#
    • 1...Qg3
      • 2.Qxe2#
    • 1...Qg6
      • 2.Qxe2#
    • 1...Qc7
      • 2.Qxe2#
    • 1...Qf7
      • 2.Qxe2#
    • 1...Qh7
      • 2.Qxe2#
    • 1...Qg8
      • 2.Qxe2#
    • 1...c2
      • 2.Qxb7#
  • Tries
    • 1.Qf1?
      • threat
        • 2.R1a2#
        • 2.Qb1#
      • 1...Kc2
        • 2.Qxe2#
      • 1...Qg1
        • 2.R1a2#
        • 2.Qxe2#
      • 1...Sc1
        • 2.Qxc1#
      • 1...c2
        • 2.R1a2#
      • 1...Be1!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qb1#
      • 1...Qg1
        • 2.Qxe2#
      • 1...c2
        • 2.Qxb7#

This is a version of 194320

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(a);P-FLIGHT::QAR2(B),XS(b)
    • Q(f);P_SPINP(c)::QAR(B),XS(b)
    • P(c);N_SPINS(b),P_SPINQ(f),SBLOCK::QAR(B),XP(e)
  • Tries
    • Try
      • Q(B);N_PINS(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(B),XS(b)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • P(c);P_SPINQ(f),SBLOCK::R1(A)
      • Refutation
        • B(d);
  • Actual
    • Q(B);N_PINS(b)
    • Threat
      • QAR1(B)
    • Vars
      • Q(f);P_SPINP(c)::QAR(B),XS(b)
      • P(c);P_SPINQ(f),SBLOCK::QAR(B),XP(e)
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