MESON Chess Problem Database

Problem Display
PID: 228873 (8/Kp1Q3r/8/4B3/n2Rp3/r1k1b2R/bp1p1q2/1n1B4 w - - 0 1)

Cristoffanini, Guido

L'Echiquier, 1926

8/Kp1Q3r/8/4B3/n2Rp3/r1k1b2R/bp1p1q2/1n1B4

#2

6 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Rxe3#
    • 1...Qg2
      • 2.Rxe3#
    • 1...Qh2
      • 2.Rxe3#
    • 1...Qf5
      • 2.Rxe3#
    • 1...Qf6
      • 2.Rxe3#
    • 1...Qf7
      • 2.Rxe3#
    • 1...Qf8
      • 2.Rxe3#
    • 1...Sc5+
      • 2.Ra4#
    • 1...Sb6+
      • 2.Ra4#
    • 1...b6
      • 2.Rxa4#
      • 2.Rxe4#
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qb4#
        • 2.Qa5#
      • 1...Sc5+
        • 2.Ra4#
      • 1...Sb6+
        • 2.Ra4#
      • 1...b6+
        • 2.Rd7#
      • 1...Qf8
        • 2.Rxe3#
      • 1...Rb3
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(e);N_GUARD::R(B),XB(h)
    • S(i);CHECK,N_PINR(C)::B(D)+R(C)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • S(i);CHECK,N_PINR(C)::B(D)+R(C)
      • P(k);CHECK,N_PINR(C)::B(D)+R(C)
      • Q(e);N_GUARD::R(B),XB(h)
      • R(f);S_CUTB(b)::QAR1(F)
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