MESON Chess Problem Database

Problem Display
PID: 145129 (3RN3/3P4/3rRB2/Pppk4/4N3/1P2P1n1/K2p3b/3Q4 w - - 0 1)

Chadwick, J

Sp. Prize, Bolton Football and Field, 1903

3RN3/3P4/3rRB2/Pppk4/4N3/1P2P1n1/K2p3b/3Q4

#2

11 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Sc7#
    • 1...Rb6
      • 2.Sc7#
    • 1...Rc6
      • 2.Re5#
    • 1...Rxd7
      • 2.Sc7#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rxd6#
      • 1...Kc6
        • 2.Sxg3#
      • 1...Kxe6
        • 2.Sg5#
      • 1...Rxe6
        • 2.Sc3#
      • 1...Rxd7
        • 2.Sc7#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Ra6
        • 2.Sc7#
      • 1...Rb6
        • 2.Sc7#
      • 1...Rc6
        • 2.Re5#
      • 1...Sf1
        • 2.Sg5#
      • 1...Sh1
        • 2.Sg5#
      • 1...Se2
        • 2.Sg5#
      • 1...Sf5
        • 2.Sg5#
      • 1...Sh5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(g);P_PINP(F)::S(K)
    • R(g);::S(K)
    • R(g);SBLOCK::R1(G)
    • R(g);P_SPINR(g),XP(I)::S(K)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • R1(G),XR(g)
    • Vars
      • K(f);P_SPINR(g),S_FLIGHT::QAB(A)+S(E),XS(c)
      • K(f);S_FLIGHT,XR(G)::S(E)
      • R(g);SBLOCK,XR(G)::QAB(A)+S(E),DCHECK
      • R(g);P_SPINR(g),XP(I)::S(K)
      • S(c);OGATE,P_SPINS(c),XS(E)::QAB1(A),XS(c)
      • R(g);P_PINP(F)::S(K)
      • R(g);::S(K)
      • R(g);SBLOCK::R1(G)
      • S(c);N_GUARD::QAB(A)+S(E)
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