MESON Chess Problem Database

Problem Display
PID: 90151 (K2R1R2/1B5N/3BkP2/2P1q1P1/4nPP1/1N2Q1p1/2Pp4/b3rr1b w - - 0 1)

Vaughan, Colin V

Die Schwalbe, 1949

K2R1R2/1B5N/3BkP2/2P1q1P1/4nPP1/1N2Q1p1/2Pp4/b3rr1b

#2

14 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.Rxd6#
    • 1...Qxc5
      • 2.Sxc5#
    • 1...Qxg5
      • 2.Sxg5#
    • 1...Sf2
      • 2.f5#
    • 1...Sc3
      • 2.Sd4#
    • 1...Sxc5
      • 2.Sxc5#
    • 1...Sxg5
      • 2.Sxg5#
    • 1...Sxd6
      • 2.Rxd6#
    • 1...Sxf6
      • 2.Rxf6#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Rde8#
      • 1...Qxd6
        • 2.Rxd6#
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Sxc5
        • 2.Sxc5#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sxf6
        • 2.Rxf6#
      • 1...Qxf6!
    • 1.g6?
      • threat
        • 2.Rfe8#
      • 1...Qxd6
        • 2.Sg5#
        • 2.Rxd6#
      • 1...Sxd6
        • 2.Sg5#
        • 2.Rxd6#
      • 1...Sxf6
        • 2.Sg5#
        • 2.Rxf6#
      • 1...Qxf6!
  • Keys
    • 1.c4!
      • threat
        • 2.Bc8#
      • 1...Qxd6
        • 2.Rxd6#
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Sxc5
        • 2.Sxc5#
      • 1...Sxg5
        • 2.Sxg5#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sxf6
        • 2.Rxf6#
      • 1...Qd5
        • 2.Bxd5#
        • 2.cxd5#
      • 1...Sf2
        • 2.f5#
      • 1...Sc3
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(h);OGATE,P_SPINS(g),XB(H)::R1(M),XQ(h)
    • Q(h);P_SPINS(g),XP(F)::S(B),XQ(h)
    • Q(h);P_SPINS(g),XP(G)::S(K),XQ(h)
    • S(g);P_PINB(J),P_SPINQ(h),S_CUTR(c)::P(D)
    • S(g);P_PINB(J),P_SPINQ(h),S_CUTB(a)::S(B)
    • S(g);P_PINB(J),P_SPINQ(h),XP(F)::S(B),XS(g)
    • S(g);P_PINB(J),P_SPINQ(h),XP(G)::S(K),XS(g)
    • S(g);OGATE,P_PINB(J),P_SPINQ(h),XB(H)::R1(M),XS(g)
    • S(g);OGATE,P_PINB(J),P_SPINQ(h),XP(I)::R1(N),XS(g)
  • Tries
    • Try
      • B(J);
      • Threat
        • R(M)
      • Vars
        • Q(h);OGATE,P_SPINS(g),XB(H)::R1(M),XQ(h)
        • Q(h);P_SPINS(g),XP(F)::S(B),XQ(h)
        • S(g);P_PINB(J),P_SPINQ(h),XP(F)::S(B),XS(g)
        • S(g);OGATE,P_PINB(J),P_SPINQ(h),XB(H)::R1(M),XS(g)
        • S(g);OGATE,P_PINB(J),P_SPINQ(h),XP(I)::R1(N),XS(g)
      • Refutation
        • Q(h);P_SPINS(g),XP(I)
    • Try
      • P(G);
      • Threat
        • R(N)
      • Refutation
        • Q(h);P_SPINS(g),XP(I)
  • Actual
    • P(A);
    • Threat
      • B(J)
    • Vars
      • Q(h);OGATE,P_SPINS(g),XB(H)::R1(M),XQ(h)
      • Q(h);P_SPINS(g),XP(F)::S(B),XQ(h)
      • S(g);P_PINB(J),P_SPINQ(h),XP(F)::S(B),XS(g)
      • S(g);P_PINB(J),P_SPINQ(h),XP(G)::S(K),XS(g)
      • S(g);OGATE,P_PINB(J),P_SPINQ(h),XB(H)::R1(M),XS(g)
      • S(g);OGATE,P_PINB(J),P_SPINQ(h),XP(I)::R1(N),XS(g)
      • S(g);P_PINB(J),P_SPINQ(h),S_CUTR(c)::P(D)
      • S(g);P_PINB(J),P_SPINQ(h),S_CUTB(a)::S(B)
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