MESON Chess Problem Database

Problem Display
PID: 93816 (8/3N4/2p2P2/3k4/P7/1K4R1/5R1Q/6B1 w - - 0 1)

Kovac, Milan

Sachove umeni (Ceskoslovensky sach), 1968

8/3N4/2p2P2/3k4/P7/1K4R1/5R1Q/6B1

#2

8 + 2

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Re2?
      • threat
        • 2.Rd3#
        • 2.Rg5#
      • 1...Kd6
        • 2.Rd3#
      • 1...c5!
    • 1.Rd3+?
      • 1...Ke4
        • 2.Sc5#
        • 2.Qh7#
      • 1...Ke6!
    • 1.Re3?
      • threat
        • 2.Rd2#
        • 2.Qe5#
      • 1...Kd4
        • 2.Rd2#
        • 2.Qe5#
      • 1...c5!
  • Keys
    • 1.Sc5!
      • 1...Kd4
        • 2.Rf5#
      • 1...Kxc5
        • 2.Rd2#
      • 1...Ke5
        • 2.Rd3#
      • 1...Kd6
        • 2.Rg5#

Anticipated by 187975(1910), 77081(1948), 23456(1963)

This anticipates 243965(1986), 7367(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB(C)+R(E),DCHECK
      • Refutation
        • P(b);
    • Try
      • R(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
  • Actual
    • S(H);
    • Vars
      • K(a);P-FLIGHT::B(A)+R(B)
      • K(a);P-FLIGHT,XS(H)::B(A)+R(B)
      • K(a);P-FLIGHT::QAB(C)+R(E)
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