MESON Chess Problem Database

Problem Display
PID: 106975 (3R4/8/K1P5/8/1N2k2N/4p3/RP2p2B/4r3 w - - 0 1)

Colonelli, Hercules

Sinfonie Scacchistiche 05. TT, 1969

3R4/8/K1P5/8/1N2k2N/4p3/RP2p2B/4r3

#2

8 + 4

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Ra4#
        • 2.Rd4#
      • 1...Ra1
        • 2.Rd4#
      • 1...Rd1!
    • 1.Sd3?
      • threat
        • 2.Sc5#
        • 2.Ra4#
      • 1...Ra1
        • 2.Sc5#
      • 1...Rc1!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Sa2#
        • 2.Sc2#
        • 2.Sd3#
      • 1...Ra1
        • 2.Sa2#
      • 1...Rc1
        • 2.Sc2#
      • 1...Rd1
        • 2.Sd3#

This anticipates 83835(1985)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);P_PINR(A)::R1(H)
      • Refutation
        • R(a);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);P_PINR(A)::S(D)
      • Refutation
        • R(a);
  • Actual
    • R(A);
    • Threat
      • DUALS(3)
    • Vars
      • R(a);P_PINR(A)::R(A)+S(D)
      • R(a);::R(A)+S(D)
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