MESON Chess Problem Database

Problem Display
PID: 60942 (2n1k2r/pN1R3p/1p1p4/q1p3N1/B7/2p2Q2/b4KR1/8 w k - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

2n1k2r/pN1R3p/1p1p4/q1p3N1/B7/2p2Q2/b4KR1/8

#2

7 + 11

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qf7#
    • 1...Bf7
      • 2.Qxf7#
    • 1...Se7
      • 2.Sxd6#
      • 2.Rd8#
    • 1...c4
      • 2.Qf7#
    • 1...d5
      • 2.Qf7#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sc7#
        • 2.Sg7#
        • 2.Qh5#
        • 2.Qf7#
      • 1...Qxa4
        • 2.Qf7#
      • 1...Qb5
        • 2.Qf7#
      • 1...b5
        • 2.Qf7#
      • 1...Rf8
        • 2.Sc7#
        • 2.Sg7#
        • 2.Qxf8#
      • 1...Rg8
        • 2.Sc7#
        • 2.Rxg8#
        • 2.Qf7#
      • 1...Bb1
        • 2.Sc7#
        • 2.Sg7#
        • 2.Qf7#
      • 1...Se7
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sxd6#
        • 2.Rd8#
      • 1...c4
        • 2.Sc7#
        • 2.Sg7#
        • 2.Qf7#
      • 1...h5
        • 2.Sc7#
        • 2.Sg7#
        • 2.Qf7#
      • 1...Bxe6!
    • 1.Rf7+?
      • 1...Qb5
        • 2.Bxb5#
      • 1...b5
        • 2.Qc6#
      • 1...Qxa4!
    • 1.Qh5+?
      • 1...Bf7
        • 2.Qxf7#
      • 1...Kf8!
    • 1.Qf6?
      • threat
        • 2.Re7#
        • 2.Rd8#
        • 2.Qd8#
      • 1...Qxa4
        • 2.Rd8#
        • 2.Qd8#
      • 1...Qb5
        • 2.Rd8#
        • 2.Qd8#
      • 1...Bf7
        • 2.Rd8#
        • 2.Qd8#
        • 2.Qxf7#
      • 1...Rf8
        • 2.Re7#
        • 2.Rd8#
      • 1...Se7
        • 2.Sxd6#
        • 2.Rxe7#
        • 2.Rd8#
        • 2.Qxe7#
      • 1...b5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Rf7#
        • 2.Qxc8#
      • 1...Rf8+
        • 2.Rf7#
      • 1...0-0+
        • 2.Sf7#
      • 1...Kf8
        • 2.Qxc8#
      • 1...Qxa4
        • 2.Qxc8#
      • 1...Qb5
        • 2.Qxc8#
      • 1...Bd5
        • 2.Qxc8#
      • 1...Be6
        • 2.Qxc8#
      • 1...Bf7
        • 2.Rxf7#
        • 2.Qxc8#
      • 1...Se7
        • 2.Rd8#
      • 1...b5
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(C)
    • B(a);N_GUARD::QAB1(C),XB(a)
    • P(d);S_CUTB(a)::QAB1(C)
    • P(f);S_CUTB(a)::QAB1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(4)
      • Vars
        • Q(c);XB(D)::QAB1(C)
        • Q(c);::QAB1(C)
        • P(e);::QAB1(C)
      • Refutation
        • B(a);XS(E)
    • Try
      • R(G);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::B(D),XQ(c)
        • P(e);P_SPINP(e)::QAB(C)
      • Refutation
        • Q(c);XB(D)
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(C),XB(a)
      • Refutation
        • K(j);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(k);CHECK::QAB(C)+R(G)
      • K(j);0-0,CHECK::R(B)+S(E)
      • K(j);P-FLIGHT::QAR(C),XS(i)
      • Q(c);XB(D)::QAR2(C),XS(i)
      • Q(c);::QAR2(C),XS(i)
      • B(a);::QAR2(C),XS(i)
      • S(i);SBLOCK::QAB(C)+R(G),DCHECK
      • P(e);::QAB(C)+R(G)
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