MESON Chess Problem Database

Problem Display
PID: 198592 (7B/q3p1nb/2pbrR2/3Nkp1n/2Q2p1P/pB4r1/K2P1N2/8 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 1974

7B/q3p1nb/2pbrR2/3Nkp1n/2Q2p1P/pB4r1/K2P1N2/8

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.d4#
    • 1...Qa4
      • 2.d4#
    • 1...Qa5
      • 2.d4#
    • 1...Qa6
      • 2.d4#
    • 1...Qb7
      • 2.d4#
    • 1...Qc7
      • 2.d4#
    • 1...Qd7
      • 2.d4#
    • 1...Qa8
      • 2.d4#
    • 1...Rg1
      • 2.Sd3#
    • 1...Rg2
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rg4
      • 2.Sd3#
    • 1...Rg5
      • 2.Sd3#
    • 1...Rg6
      • 2.Sd3#
    • 1...Sxf6
      • 2.Qxf4#
    • 1...f3
      • 2.Sd3#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Rxe6#
      • 1...Kxf6
        • 2.Qxe6#
      • 1...Rxf6
        • 2.d4#
      • 1...Sxf6
        • 2.d4#
      • 1...exf6
        • 2.d4#
      • 1...Qd7
        • 2.Sxd7#
      • 1...Rg6
        • 2.Qc3#
      • 1...Bg8!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rxe6#
      • 1...Kxf6
        • 2.Qxe6#
      • 1...Rxf6
        • 2.Sd3#
      • 1...Sxf6
        • 2.Sd3#
      • 1...exf6
        • 2.Sd3#
      • 1...Qd7
        • 2.Qc3#
      • 1...Rg6
        • 2.Rxf5#
      • 1...Bg8
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • Q(j);N_GUARD::P(B)
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • S(f);N_GUARD,XR(H)::QAB1(E),XP(c)
    • P(c);S_CUTR(b)::S(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(H),XR(i)
      • Vars
        • K(d);P_SPINS(l),S_FLIGHT,XR(H)::QAR1(E),XR(i)
        • R(i);SBLOCK,XR(H)::P(B)
        • S(f);SBLOCK,XR(H)::P(B)
        • P(k);SBLOCK,XR(H)::P(B)
        • Q(j);N_GUARD::S(G),XQ(j)
        • R(b);N_GUARD::QAB(E)
      • Refutation
        • B(m);
  • Actual
    • S(G);
    • Threat
      • R1(H),XR(i)
    • Vars
      • K(d);P_SPINS(l),S_FLIGHT,XR(H)::QAR1(E),XR(i)
      • R(i);SBLOCK,XR(H)::S(C)
      • S(f);SBLOCK,XR(H)::S(C)
      • P(k);SBLOCK,XR(H)::S(C)
      • Q(j);N_GUARD::QAB(E)
      • R(b);S_CUTB(m)::R1(H),XP(e)
      • B(m);N_GUARD::R1(H),XP(e)
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