MESON Chess Problem Database

Problem Display
PID: 15160 (3n4/BppK4/1RP1P2b/3Bkp1N/2P3P1/1pq1PP2/2np4/1QNbR3 w - - 0 1)

McWilliam, Robert C

Schiffs with Everything, 1980

3n4/BppK4/1RP1P2b/3Bkp1N/2P3P1/1pq1PP2/2np4/1QNbR3

#2

14 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sd3#
    • 1...Qb2
      • 2.Sd3#
    • 1...Qb4
      • 2.Sd3#
    • 1...Qa5
      • 2.Sd3#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Bg7
      • 2.f4#
    • 1...Bf8
      • 2.f4#
    • 1...Sa1
      • 2.Qxf5#
    • 1...Sxe1
      • 2.Qxf5#
    • 1...Sa3
      • 2.Qxf5#
    • 1...Sb4
      • 2.Qxf5#
    • 1...cxb6
      • 2.Bb8#
  • Keys
    • 1.Rb5!
      • threat
        • 2.Be4#
      • 1...Qxe3
        • 2.Sd3#
      • 1...Qxc4
        • 2.Bxc4#
      • 1...Bxf3
        • 2.Bxf3#
      • 1...Bxe3
        • 2.f4#
      • 1...Sxe3
        • 2.Qxf5#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...bxc6
        • 2.Bxc6#
      • 1...Qb4
        • 2.Sd3#
      • 1...Qd4
        • 2.exd4#
      • 1...Qa5
        • 2.Sd3#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Bf8
        • 2.f4#
      • 1...Sa3
        • 2.Qxf5#
      • 1...Sb4
        • 2.Qxf5#
      • 1...Sd4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 6
  • Sets
    • Q(e);N_GUARD::S(B)
    • Q(e);N_GUARD,P_PINB(H)::S(B),XQ(e)
    • B(h);N_GUARD::P(E)
    • S(b);OGATE::QAR1(A),XP(g)
    • S(b);OGATE,XR(C)::QAR1(A),XP(g)
    • P(j);OGATEB,XR(J)::B(M)
  • Actual
    • R(J);
    • Threat
      • R(J)+B(H)
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),XP(D)::S(B)
      • Q(e);OGATE,XP(F)::R(J)+B(H),XQ(e)
      • B(a);OGATE,XP(E)::R(J)+B(H),XB(a)
      • B(h);N_GUARD,P_SPINB(h),XP(D)::P(E)
      • S(b);OGATE,P_SPINS(b),XP(D)::QAR1(A),XP(g)
      • S(k);OGATE,XP(L)::R(J)+B(H),XS(k)
      • P(i);OGATE,XP(K)::R(J)+B(H),XP(i)
      • Q(e);N_GUARD::S(B)
      • Q(e);OGATE,P_PINB(H)::R(C)+P(D)DCHECK,XQ(e)
      • Q(e);N_GUARD,P_PINB(H)::S(B),XQ(e)
      • B(h);N_GUARD::P(E)
      • S(b);OGATE::QAR1(A),XP(g)
      • S(b);OGATE::R(C)+P(D)DCHECK,XS(b)
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