MESON Chess Problem Database

Problem Display
PID: 141948 (7K/7N/5P2/2pP1p2/3qkP2/Q2Rp3/4N1P1/8 w - - 0 1)

Nield, Joshua

Illustrated Western News, 0000

7K/7N/5P2/2pP1p2/3qkP2/Q2Rp3/4N1P1/8

#2

9 + 5

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sg5#
    • 1...Qb2
      • 2.Sg5#
    • 1...Qe5
      • 2.Sg5#
    • 1...Qxf6+
      • 2.Sxf6#
    • 1...Qa4
      • 2.Sg5#
    • 1...Qb4
      • 2.Sg5#
    • 1...Qc4
      • 2.Sg5#
    • 1...Qxd5
      • 2.Sg5#
      • 2.Rxe3#
    • 1...c4
      • 2.Rxd4#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Sg5#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...c4
        • 2.Rxd4#
      • 1...Qc3!
  • Keys
    • 1.Qa6!
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Qxd3
        • 2.Qe6#
      • 1...Qxd5
        • 2.Sg5#
      • 1...c4
        • 2.Rxd4#
      • 1...Qa1
        • 2.Sg5#
      • 1...Qb2
        • 2.Sg5#
      • 1...Qc3
        • 2.Sg5#
      • 1...Qe5
        • 2.Sg5#
      • 1...Qa4
        • 2.Sg5#
      • 1...Qb4
        • 2.Sg5#
      • 1...Qc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(b);::S(H)
    • Q(b);CHECK,XP(G)::S(H),XQ(b)
    • Q(b);N_PINP(G)::S(H)
    • P(d);N_GUARD::R1(D),XQ(b)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(H)
      • Vars
        • Q(b);CHECK,XP(G)::S(H),XQ(b)
        • P(d);N_GUARD::R1(D),XQ(b)
      • Refutation
        • Q(b);
  • Actual
    • Q(C);
    • Vars
      • Q(b);CHECK,XP(G)::S(H),XQ(b)
      • K(c);P_SPINQ(b),S_FLIGHT,XP(F)::S(A)
      • Q(b);N_GUARD,N_PINP(G),SBLOCK,XR(D)::QAR2(C)
      • Q(b);N_PINP(G),XP(F)::S(H)
      • P(d);N_GUARD::R1(D),XQ(b)
      • Q(b);::S(H)
      • Q(b);N_PINP(G)::S(H)
      • Q(b);N_PINP(G),OGATEB::QAR2(C),XQ(b)
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