MESON Chess Problem Database

Problem Display
PID: 32440 (2B5/8/K1N3b1/p4r2/r4k1P/1Np2p2/5B2/3Q4 w - - 0 1)

McArthur, William Johnstone

Huddersfield College Magazine, 1875

2B5/8/K1N3b1/p4r2/r4k1P/1Np2p2/5B2/3Q4

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Ra3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qxf3#
        • 2.Qxa4#
      • 1...Kg4
        • 2.Qxf3#
      • 1...cxd2
        • 2.Qxa4#
      • 1...Ra1
        • 2.Qxf3#
      • 1...Ra2
        • 2.Qxf3#
      • 1...Ra3
        • 2.Qxf3#
      • 1...Rb4
        • 2.Qxf3#
      • 1...Rc4
        • 2.Qxf3#
      • 1...Rd4
        • 2.Qxf3#
      • 1...Re4
        • 2.Qxf3#
      • 1...Rb5
        • 2.Qxf3#
      • 1...Rc5
        • 2.Qxf3#
      • 1...Rd5
        • 2.Qxf3#
      • 1...Re5
        • 2.Qxf3#
      • 1...Rg5
        • 2.Qxf3#
      • 1...Rh5
        • 2.Qxf3#
      • 1...Rf6
        • 2.Qxf3#
      • 1...Rf7
        • 2.Qxf3#
      • 1...Rf8
        • 2.Qxf3#
      • 1...Bh5
        • 2.Qxa4#
      • 1...Bf7
        • 2.Qxf3#
      • 1...c2
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR2(A)
    • R(c);N_GUARD::QAR2(A),XR(c)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(b),P_SPINR(f)::QAB1(A),XP(b)
      • P(a);XS(C)::QAR(A),XR(c)
      • R(c);::QAR1(A),XP(b)
      • R(f);::QAR1(A),XP(b)
      • R(f);P_PINS(F)::QAR1(A),XP(b)
      • B(g);::QAR(A),XR(c)
      • B(g);::QAR1(A),XP(b)
      • P(a);::QAR1(A),XP(b)
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