MESON Chess Problem Database

Problem Display
PID: 60941 (r3k3/PrpR2Rb/8/1NB2Np1/Qn6/7B/8/3K4 w q - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

r3k3/PrpR2Rb/8/1NB2Np1/Qn6/7B/8/3K4

#2

9 + 7

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sxc7#
    • 1...Rbb8
      • 2.Sxc7#
    • 1...Sa2
      • 2.Qe4#
    • 1...Sc2
      • 2.Qe4#
    • 1...Sa6
      • 2.Qe4#
  • Tries
    • 1.Sbd6+?
      • 1...Kf8
        • 2.Rdf7#
      • 1...cxd6!
    • 1.Sfd6+?
      • 1...Kf8
        • 2.Rdf7#
      • 1...cxd6!
    • 1.Rde7+?
      • 1...Kf8
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re4#
        • 2.Re5#
        • 2.Re6#
      • 1...Kd8!
    • 1.Rg8+?
      • 1...Bxg8
        • 2.Sg7#
      • 1...Kxd7!
    • 1.Qb3?
      • threat
        • 2.Qe6#
        • 2.Qf7#
        • 2.Qe3#
      • 1...Bxf5
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rb6
        • 2.Sxc7#
        • 2.Qf7#
      • 1...Bg6
        • 2.Qe6#
        • 2.Qg8#
        • 2.Qe3#
      • 1...Bg8
        • 2.Qxg8#
      • 1...Sc2
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sd3
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Sd5!
  • Keys
    • 1.Rdf7!
      • threat
        • 2.Rf8#
      • 1...Rd8+
        • 2.Sbd6#
      • 1...0-0-0+
        • 2.Sfd6#
      • 1...Kd8
        • 2.Rf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::S(D),XP(d)
    • S(a);OGATE::QAR(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT::R1(H)
      • Refutation
        • P(d);XS(D)
    • Try
      • S(F);CHECK
      • Vars
        • K(g);P-FLIGHT::R1(H)
      • Refutation
        • P(d);XS(F)
    • Try
      • R(H);CHECK
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • R(I);CHECK
      • Vars
        • B(e);XR(I)::S(F)
      • Refutation
        • K(g);S_FLIGHT,XR(H)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(e);N_GUARD::QAR2(C),XB(e)
        • S(a);::QAB1(C)
      • Refutation
        • S(a);
  • Actual
    • R(H);
    • Threat
      • R1(H)
    • Vars
      • R(f);CHECK,SBLOCK::QAB(C)+S(D),DCHECK
      • K(g);0-0-0,CHECK::B(B)+S(F),DCHECK
      • K(g);P-FLIGHT::R(H)
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