MESON Chess Problem Database

Problem Display
PID: 23810 (3r4/2N3p1/2pp4/R3PnKp/1b2kp2/R4p2/5Pb1/BN1Qn2r w - - 0 1)

Shire, David J

1st Prize, Thema Danicum, 1996

3r4/2N3p1/2pp4/R3PnKp/1b2kp2/R4p2/5Pb1/BN1Qn2r

#2

9 + 13

145 StrateGems 1999
4849 The Sushkov Theme 1999
3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bxa3
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bc5
      • 2.Sd2#
    • 1...Sc2
      • 2.Qxc2#
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Se3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sh4
      • 2.Qd4#
    • 1...Sh6
      • 2.Qd4#
    • 1...Se7
      • 2.Qd4#
    • 1...c5
      • 2.Qd5#
    • 1...dxe5
      • 2.Rxe5#
  • Tries
    • 1.Re3+?
      • 1...Sxe3
        • 2.Qd4#
      • 1...fxe3!
    • 1.R3a4?
      • threat
        • 2.Sc3#
      • 1...Sd3
        • 2.Sd2#
      • 1...Sd4
        • 2.Qxd4#
      • 1...c5
        • 2.Qd5#
      • 1...d5!
    • 1.Qc2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxc2!
    • 1.Qa4?
      • threat
        • 2.Sd2#
      • 1...dxe5
        • 2.Rxe5#
      • 1...Sd4!
    • 1.Qd2?
      • threat
        • 2.Qxf4#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bxa3
        • 2.Sc3#
      • 1...dxe5
        • 2.Rxe5#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se3
        • 2.Qd4#
      • 1...Rh4!
  • Keys
    • 1.R5a4!
      • threat
        • 2.Sd2#
      • 1...dxe5
        • 2.Sc3#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • B(e);N_GUARD::S(B),XB(e)
    • B(e);N_GUARD,XR(E)::S(B)
    • B(e);N_GUARD::S(B)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(h);N_GUARD::QAR1(C)
    • S(h);N_GUARD::QAR1(C),XS(h)
    • P(j);N_GUARD::QAB1(C)
    • P(k);OGATE,XP(G)::R1(F),XP(k)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • S(h);XR(E)::QAR1(C)
      • Refutation
        • P(g);XR(E)
    • Try
      • R(E);P_PINB(e)
      • Threat
        • S(B)
      • Vars
        • S(a);SBLOCK::S(B)
        • S(h);N_GUARD,N_SPINB(e)::QAR1(C),XS(h)
        • P(j);N_GUARD::QAB1(C)
      • Refutation
        • P(k);
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);P_PINB(e)
      • Threat
        • S(B)
      • Vars
        • P(k);OGATE,XP(G)::R1(F),XP(k)
      • Refutation
        • S(h);N_SPINB(e)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(g)
      • Vars
        • B(e);XQ(C)::S(B),XB(e)
        • B(e);N_GUARD,XR(E)::S(B)
        • P(k);OGATE,XP(G)::R1(F),XP(k)
        • B(e);N_GUARD::S(B),XB(e)
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(h);N_GUARD::QAR1(C)
      • Refutation
        • R(b);
  • Actual
    • R(F);P_PINB(e)
    • Threat
      • S(B)
    • Vars
      • P(k);SBLOCK,XP(G)::S(B)
      • S(h);N_GUARD,N_SPINB(e)::QAR1(C),XS(h)
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