MESON Chess Problem Database

Problem Display
PID: 60951 (8/b7/B4n2/3p4/1Q4p1/R2Pk3/6P1/4K2R w K - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

8/b7/B4n2/3p4/1Q4p1/R2Pk3/6P1/4K2R

#2

7 + 5

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qd2#
    • 1...d4
      • 2.Qd2#
  • Tries
    • 1.Rh3+?
      • 1...g3
        • 2.Rxg3#
      • 1...gxh3!
    • 1.Ra2?
      • threat
        • 2.Re2#
      • 1...Bd4
        • 2.Qd2#
      • 1...d4
        • 2.Qd2#
      • 1...Se4!
    • 1.Ra4?
      • threat
        • 2.Qd2#
        • 2.Qf4#
      • 1...Bd4
        • 2.Qd2#
        • 2.Qxd4#
      • 1...d4
        • 2.Qd2#
      • 1...Bb8
        • 2.Qd2#
        • 2.Qd4#
      • 1...Sh5
        • 2.Qd2#
        • 2.Qe7#
      • 1...Se4!
  • Keys
    • 1.0-0!
      • threat
        • 2.Re1#
      • 1...Ke2+
        • 2.d4#
      • 1...Bd4
        • 2.Qe1#
      • 1...Se4
        • 2.dxe4#
      • 1...d4
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::QAB1(F)
    • P(c);SBLOCK::QAB1(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::R(B),XP(b)
      • Refutation
        • P(b);XR(B)
    • Try
      • R(D);
      • Threat
        • R1(D)
      • Vars
        • B(e);SBLOCK::QAB1(F)
        • P(c);SBLOCK::QAB1(F)
      • Refutation
        • S(d);
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(F)
      • Refutation
        • S(d);
  • Actual
    • K(A);0-0
    • Threat
      • R(B)
    • Vars
      • K(a);CHECK,P-FLIGHT::B(G)+P(E)
      • B(e);SBLOCK::QAR2(F)
      • S(d);OGATE::R(D)+P(E),XS(d)
      • P(c);SBLOCK::QAR2(F)
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