MESON Chess Problem Database

Problem Display
PID: 60953 (B7/3KBpQ1/1p2p2r/4N2R/2pk2N1/1p4R1/5n2/3r4 w - - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1940

B7/3KBpQ1/1p2p2r/4N2R/2pk2N1/1p4R1/5n2/3r4

#2

8 + 9

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sf3#
    • 1...Sd3
      • 2.Sf3#
    • 1...Se4
      • 2.Sc6#
    • 1...Sxg4
      • 2.Qxg4#
  • Tries
    • 1.Sg6+?
      • 1...e5
        • 2.Qxe5#
      • 1...f6!
    • 1.Sxf7+?
      • 1...e5
        • 2.Qxe5#
      • 1...Rf6!
    • 1.Bc5+?
      • 1...Kxc5+
        • 2.Sd3#
      • 1...bxc5!
    • 1.Rxb3?
      • threat
        • 2.Sf3#
      • 1...c3
        • 2.Rb4#
      • 1...cxb3!
    • 1.Rc3?
      • threat
        • 2.Sf3#
        • 2.Rxc4#
      • 1...Sxg4
        • 2.Sf3#
      • 1...Rf6
        • 2.Rxc4#
      • 1...Rc1
        • 2.Sf3#
      • 1...b5
        • 2.Sf3#
      • 1...f6
        • 2.Rxc4#
      • 1...Kxc3+!
    • 1.Rd3+?
      • 1...Rxd3
        • 2.Sf3#
      • 1...Sxd3
        • 2.Sf3#
      • 1...cxd3!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Bxb6#
      • 1...Kc5+
        • 2.Sd3#
      • 1...Rd3
        • 2.Sf3#
      • 1...Sd3
        • 2.Sf3#
      • 1...Se4
        • 2.Sc6#
      • 1...b5
        • 2.Bb6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAB(G)+S(C),DCHECK
    • S(b);SBLOCK::QAB(G)+S(C),DCHECK
    • S(b);OGATE,XS(B)::QAR(G),XS(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB1(G),XP(g)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(C);CHECK,XP(i)
      • Vars
        • P(g);P_SPINP(g)::QAB1(G),XP(g)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • B(F);CHECK
      • Vars
        • K(e);CHECK,S_FLIGHT,XB(F)::R(D)+S(C),DCHECK
      • Refutation
        • P(f);XB(F)
    • Try
      • R(A);XP(c)
      • Threat
        • QAB(G)+S(C),DCHECK
      • Vars
        • P(d);OGATEB,SBLOCK::R(A)
      • Refutation
        • P(d);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XS(B)::QAB(G)+S(C),DCHECK
        • R(h);::R1(A),XP(d)
        • R(a);::QAB(G)+S(C),DCHECK
        • P(f);::QAB(G)+S(C),DCHECK
        • P(i);::R1(A),XP(d)
      • Refutation
        • K(e);CHECK,S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • R(a);SBLOCK,XR(A)::QAB(G)+S(C),DCHECK
        • S(b);SBLOCK,XR(A)::QAB(G)+S(C),DCHECK
      • Refutation
        • P(d);XR(A)
  • Actual
    • B(F);
    • Threat
      • B(F),XP(f)
    • Vars
      • K(e);CHECK,S_FLIGHT::R(D)+S(C),DCHECK
      • R(a);SBLOCK::QAB(G)+S(C),DCHECK
      • S(b);SBLOCK::QAB(G)+S(C),DCHECK
      • P(f);::B(F)
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