MESON Chess Problem Database

Problem Display
PID: 60726 (3R3B/5P1q/bp1N3p/7B/1pP1NP2/3k2p1/3P4/1KR5 w - - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1947

3R3B/5P1q/bp1N3p/7B/1pP1NP2/3k2p1/3P4/1KR5

#2

11 + 7

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Rc3#
  • Tries
    • 1.Sf2+?
      • 1...Kxd2+
        • 2.Sf5#
      • 1...gxf2!
    • 1.Sc5+?
      • 1...Kxd2+
        • 2.Sf5#
      • 1...bxc5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sde4#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sc8#
        • 2.Sde8#
      • 1...Kxd2+
        • 2.Sf5#
      • 1...Kd4+
        • 2.Sde4#
      • 1...Qxf7
        • 2.Sxf7#
      • 1...Qxh8
        • 2.Sde8#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Qe4
        • 2.Sdxe4#
      • 1...Qf5
        • 2.Sxf5#
      • 1...Qg8
        • 2.Sde8#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Bb7
        • 2.Sxb7#
      • 1...Bc8
        • 2.Sxc8#
      • 1...b5
        • 2.Sde4#
        • 2.Sxb5#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sc8#
        • 2.Sde8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::R1(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);CHECK,P-FLIGHT,XP(C)::R(J)+S(H)
      • Refutation
        • P(b);XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);CHECK,P-FLIGHT,XP(C)::R(J)+S(H)
      • Refutation
        • P(e);XS(E)
  • Actual
    • S(E);
    • Threat
      • DUALS(6)
    • Vars
      • K(a);CHECK,P-FLIGHT,XP(C)::R(J)+S(H)
      • K(a);CHECK,P-FLIGHT::R(J)+S(H)
      • Q(g);XP(I)::R(J)+S(H),XQ(g)
      • Q(g);XB(K)::R(J)+S(H)
      • B(d);XP(D)::R(J)+S(H),XB(d)
      • Q(g);::R(J)+S(H),XQ(g)
      • Q(g);::R(J)+S(H)
      • B(d);::R(J)+S(H),XB(d)
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