MESON Chess Problem Database

Problem Display
PID: 39339 (3Rn1B1/B7/2p2p2/K3pn1N/1p2k1P1/1R3p2/1N3p2/1b2bQ2 w - - 0 1)

Swindley, Cyril P

1st HM., Die Schwalbe 168. TT, 1982

3Rn1B1/B7/2p2p2/K3pn1N/1p2k1P1/1R3p2/1N3p2/1b2bQ2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bd2
      • 2.Qxb1#
    • 1...Bc3
      • 2.Qxb1#
    • 1...Se3
      • 2.Rxe3#
    • 1...Sg3
      • 2.Re3#
      • 2.Qc4#
    • 1...Sh4
      • 2.Re3#
      • 2.Qc4#
    • 1...Sfd6
      • 2.Re3#
    • 1...Sh6
      • 2.Re3#
      • 2.Qc4#
    • 1...Se7
      • 2.Re3#
      • 2.Qc4#
    • 1...Sfg7
      • 2.Re3#
      • 2.Qc4#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Sc5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Bc3
        • 2.Qxb1#
      • 1...Sfd6
        • 2.Re3#
      • 1...c5
        • 2.Sxc5#
      • 1...Sed6!
    • 1.Sg3+?
      • 1...Sxg3
        • 2.Qc4#
      • 1...Kf4!
    • 1.Bh7?
      • threat
        • 2.Bxf5#
        • 2.Re3#
        • 2.Qc4#
      • 1...Bd3
        • 2.Bxf5#
        • 2.Qxd3#
      • 1...Bd2
        • 2.Bxf5#
        • 2.Qc4#
        • 2.Qxb1#
      • 1...Bc3
        • 2.Bxf5#
        • 2.Qxb1#
      • 1...Sg7
        • 2.Re3#
        • 2.Qc4#
      • 1...c5
        • 2.Bxf5#
        • 2.Qc4#
      • 1...Sd6!
    • 1.Qe2+?
      • 1...Se3
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...fxe2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc5#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...c5
        • 2.Sxc5#
      • 1...Bc3
        • 2.Sxf2#
      • 1...Sfd6
        • 2.Sg3#
      • 1...Sed6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(b);OGATE::QAB(A),XB(a)
    • S(h);N_GUARD::R1(C),XS(h)
    • S(h);N_GUARD::R1(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(b);OGATE::QAB(A),XB(a)
        • S(h);N_GUARD::R1(C)
        • P(i);::S(B),XP(i)
      • Refutation
        • S(k);
    • Try
      • S(F);CHECK
      • Vars
        • S(h);XS(F)::QAR2(A)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(I);P_PINS(h)
      • Threat
        • DUALS(3)
      • Refutation
        • S(k);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(d);XQ(A)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(a);OGATE,XS(B)::QAB1(A),XB(a)
      • P(i);::S(B),XP(i)
      • B(b);N_GUARD::S(B),XP(c)
      • S(h);N_GUARD::S(F)
      • S(k);N_GUARD::S(F),XP(j)
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