MESON Chess Problem Database

Problem Display
PID: 147102 (8/8/1p2N2p/2p1P3/1NP1kpB1/4q3/KP4P1/Q3R3 w - - 0 1)

Willmott, Arthur

Australian Chess Problem Magazine TT, 1996

8/8/1p2N2p/2p1P3/1NP1kpB1/4q3/KP4P1/Q3R3

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Qxe1#
    • 1...Qe2
      • 2.Rxe2#
  • Tries
    • 1.Rxe3+?
      • 1...Kxe3
        • 2.Qe1#
      • 1...fxe3!
    • 1.Qd1?
      • threat
        • 2.Qd5#
      • 1...Qxe1
        • 2.Qxe1#
      • 1...Qe2
        • 2.Rxe2#
        • 2.Qxe2#
      • 1...Kxe5!
  • Keys
    • 1.b3!
      • 1...Qe2+
        • 2.Rxe2#
      • 1...Qxe1
        • 2.Qxe1#
      • 1...cxb4
        • 2.Qd4#
      • 1...f3
        • 2.gxf3#
      • 1...b5
        • 2.Sxc5#
      • 1...h5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_SPINQ(a),OGATE,XR(B)::QAR(A),XQ(a)
    • Q(a);OGATEB,P_PINP(D)::R(B),XQ(a)
  • Tries
    • Try
      • R(B);CHECK,XQ(a)
      • Vars
        • K(b);P-FLIGHT,XR(B)::QAR2(A)
      • Refutation
        • P(c);XR(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(a);N_SPINQ(a),OGATE,XR(B)::QAR(A),XQ(a)
      • Refutation
        • K(b);P-FLIGHT,XP(I)
  • Actual
    • P(D);
    • Vars
      • Q(a);CHECK,OGATEB::R(B),XQ(a)
      • Q(a);N_SPINQ(a),OGATE,XR(B)::QAR(A),XQ(a)
      • P(d);N_GUARD,XS(F)::QAR1(A)
      • P(c);OGATE::P(E),XP(c)
      • P(e);N_GUARD::S(J),XP(d)
      • P(f);N_GUARD::S(J)
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