MESON Chess Problem Database

Problem Display
PID: 30038 (4nK2/1p1QP1p1/3P4/1r1k2r1/1P2p3/1b2P3/4N2B/2R5 w - - 0 1)

Shire, David J

Die Schwalbe, 1988

4nK2/1p1QP1p1/3P4/1r1k2r1/1P2p3/1b2P3/4N2B/2R5

#2

9 + 8

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rxc5#
    • 1...Rb6
      • 2.Rc5#
    • 1...Rg1
      • 2.Qf5#
    • 1...Rg2
      • 2.Qf5#
    • 1...Rg4
      • 2.Qf5#
    • 1...Re5
      • 2.Sf4#
    • 1...Rf5+
      • 2.Qxf5#
    • 1...Rg6
      • 2.Qf5#
    • 1...Bc4
      • 2.Sc3#
    • 1...Sxd6
      • 2.Qxd6#
    • 1...Sc7
      • 2.dxc7#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qxb5#
        • 2.Qe6#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Rxb4
        • 2.Qe6#
      • 1...Sxd6
        • 2.Qe6#
        • 2.Qxd6#
      • 1...Rg3
        • 2.Qe6#
      • 1...Ra5
        • 2.Qe6#
        • 2.Qxb7#
      • 1...Rc5
        • 2.Rxc5#
        • 2.Qe6#
      • 1...Rb6
        • 2.Rc5#
        • 2.Qe6#
      • 1...Rg6
        • 2.Qxb5#
        • 2.Qf5#
      • 1...Ba4
        • 2.Qe6#
      • 1...Bc4
        • 2.Qe6#
      • 1...Sc7
        • 2.dxc7#
      • 1...Re5!
    • 1.Rd1+?
      • 1...Kc4
        • 2.Rd4#
      • 1...Bxd1!
  • Keys
    • 1.Kf7!
      • threat
        • 2.Qxb5#
        • 2.Qe6#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Sxd6+
        • 2.Qxd6#
      • 1...Rxb4
        • 2.Qe6#
      • 1...Rg3
        • 2.Qe6#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Ra5
        • 2.Qe6#
        • 2.Qxb7#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rb6
        • 2.Rc5#
        • 2.Qe6#
      • 1...Re5
        • 2.Sf4#
      • 1...Rg6
        • 2.Qxb5#
        • 2.Qf5#
      • 1...Ba4
        • 2.Qe6#
      • 1...Bc4
        • 2.Sc3#
      • 1...Sc7
        • 2.dxc7#

This is a version of 15818

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::R1(A),XR(c)
    • R(c);N_GUARD::R1(A)
    • R(e);N_GUARD::QAR2(G)
    • R(e);SBLOCK::S(B)
    • R(e);CHECK,N_GUARD::QAR2(G),XR(e)
    • B(a);SBLOCK::S(B)
    • S(h);OGATE,P_SPINS(h),XP(F)::QAR1(G),XS(h)
    • S(h);OGATE::QAR(G)+P(F),XS(h)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);CHECK,N_GUARD::QAR2(G),XR(e)
        • R(c);XP(E)::QAB1(G)
        • R(e);::QAB1(G)
        • B(a);::QAB1(G)
        • S(h);OGATE::QAR(G)+P(F),XS(h)
      • Refutation
        • R(e);
    • Try
      • R(A);CHECK
      • Vars
        • K(d);S_FLIGHT::R1(A)
      • Refutation
        • B(a);XR(A)
  • Actual
    • K(I);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • R(e);CHECK,N_GUARD::QAR2(G),XR(e)
      • S(h);CHECK,OGATE,P_SPINS(h),XP(F)::QAR1(G),XS(h)
      • R(c);XP(E)::QAB1(G)
      • R(e);::QAB1(G)
      • B(a);::QAR2(G),XR(c)
      • R(c);N_GUARD::R1(A),XR(c)
      • R(e);SBLOCK::S(B)
      • B(a);::QAB1(G)
      • B(a);SBLOCK::S(B)
      • S(h);OGATE::QAR(G)+P(F),XS(h)
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