MESON Chess Problem Database

Problem Display
PID: 137669 (4K2B/4p1Np/2p1R1pr/Npn1R3/1nqkpP2/2r2P2/2QPP3/8 w - - 0 1)

Maleika, Gerhard

Comm., Probleemblad, 2010

4K2B/4p1Np/2p1R1pr/Npn1R3/1nqkpP2/2r2P2/2QPP3/8

#2

11 + 12

102 Probleemblad 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qxc3#
    • 1...Qxe2
      • 2.Qxc3#
    • 1...Qd5
      • 2.Qxc3#
    • 1...Qxe6
      • 2.Qxc3#
    • 1...Sa2
      • 2.Sxc6#
    • 1...Sxc2
      • 2.Sxc6#
    • 1...Sbd3
      • 2.Sxc6#
      • 2.e3#
    • 1...Sd5
      • 2.Sxc6#
    • 1...Sba6
      • 2.Sxc6#
    • 1...Sb3
      • 2.Qxe4#
    • 1...Scd3
      • 2.e3#
    • 1...Sa4
      • 2.Qxe4#
    • 1...Sca6
      • 2.Qxe4#
    • 1...Sxe6
      • 2.Qxe4#
    • 1...Sb7
      • 2.Qxe4#
    • 1...Sd7
      • 2.Qxe4#
    • 1...g5
      • 2.Sf5#
  • Tries
    • 1.Rd5+?
      • 1...Qxd5
        • 2.Sf5#
        • 2.Qxc3#
      • 1...Sxd5
        • 2.Sxc6#
        • 2.Sf5#
      • 1...cxd5
        • 2.Sf5#
        • 2.Sh5#
      • 1...Kxd5!
    • 1.Rd6+?
      • 1...Qd5
        • 2.Qxc3#
      • 1...Sd5
        • 2.Sxc6#
      • 1...exd6!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Sh5#
      • 1...Qxe6
        • 2.Sxe6#
        • 2.Qxc3#
      • 1...Sxe6
        • 2.Sxe6#
        • 2.Qxe4#
      • 1...Qd5
        • 2.Sf5#
        • 2.Qxc3#
      • 1...Rh5
        • 2.Sxh5#
      • 1...Sbd3
        • 2.Sxc6#
        • 2.e3#
      • 1...Sd5
        • 2.Sxc6#
        • 2.Sf5#
      • 1...Scd3
        • 2.Rxe4#
        • 2.e3#
      • 1...Sd7
        • 2.Rxe4#
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 16
  • Sets
    • Q(c);N_GUARD::QAB1(A),XR(a)
    • Q(c);N_GUARD,XP(C)::QAB1(A),XR(a)
    • Q(c);N_GUARD,XR(H)::QAB1(A),XR(a)
    • S(b);N_GUARD::S(F),XP(h)
    • S(b);N_GUARD,XQ(A)::S(F),XP(h)
    • S(g);N_GUARD::QAR1(A),XP(e)
    • S(g);S_CUTR(a)::P(C)
    • S(g);N_GUARD,XR(H)::QAR1(A),XP(e)
    • P(i);N_GUARD::S(I)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(d);P-FLIGHT,XR(G)
    • Try
      • R(H);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::QAB1(A),XR(a)
        • S(b);P_SPINS(b)::S(F),XP(h)
      • Refutation
        • P(k);XR(H)
  • Actual
    • R(G);
    • Threat
      • B(K)+S(I)
    • Vars
      • R(j);::B(K)+S(I),XR(j)
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