MESON Chess Problem Database

Problem Display
PID: 15184 (1r3N2/1ppB4/7Q/2kPPRn1/2N1pp2/2K2p2/8/3R4 w - - 0 1)

Sickinger, Peter

Zucker, Manfred

Comm., Urania TT, 1980

1r3N2/1ppB4/7Q/2kPPRn1/2N1pp2/2K2p2/8/3R4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf8
      • 2.Qxf8#
    • 1...Sh3
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sf7
      • 2.Se6#
    • 1...Sh7
      • 2.Se6#
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Ba4?
      • threat
        • 2.Sd7#
      • 1...Rxf8
        • 2.Qxf8#
      • 1...Rd8!
    • 1.Bc6?
      • threat
        • 2.Sd7#
      • 1...Rxf8
        • 2.Qxf8#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Rd8!
    • 1.Qa6?
      • threat
        • 2.Qb5#
        • 2.Qa3#
      • 1...Ra8
        • 2.Qb5#
      • 1...b5
        • 2.Qc6#
      • 1...c6
        • 2.Qb6#
      • 1...bxa6!
    • 1.d6?
      • threat
        • 2.e6#
      • 1...cxd6
        • 2.Qxd6#
        • 2.exd6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sf7
        • 2.Se6#
      • 1...Rxf8!
    • 1.e6?
      • threat
        • 2.d6#
      • 1...Rxf8
        • 2.Qxf8#
      • 1...Sf7!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Rb5#
      • 1...Kxd5
        • 2.e6#
      • 1...b5
        • 2.Qc6#
      • 1...c6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(h);OGATE,XS(I)::QAB(G),XR(h)
    • S(e);N_GUARD::S(I)
    • S(e);N_GUARD::S(I),XS(e)
    • P(f);N_GUARD::QAR1(G)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(I)
      • Vars
        • R(h);OGATE,XS(I)::QAB(G),XR(h)
      • Refutation
        • R(h);
    • Try
      • B(H);
      • Threat
        • S(I)
      • Vars
        • R(h);OGATE,XS(I)::QAB(G),XR(h)
        • P(f);OGATE,XB(H)::QAR1(G),XP(f)
      • Refutation
        • R(h);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);::QAR1(G)
        • P(f);N_GUARD::QAR1(G)
        • P(g);N_GUARD::QAB1(G)
      • Refutation
        • P(f);XQ(G)
    • Try
      • P(D);
      • Threat
        • R(F)+P(E)
      • Vars
        • S(e);N_GUARD::S(I),XS(e)
        • S(e);N_GUARD::S(I)
      • Refutation
        • R(h);XS(I)
    • Try
      • P(E);
      • Threat
        • R(F)+P(D)
      • Vars
        • R(h);OGATE,XS(I)::QAB(G),XR(h)
      • Refutation
        • S(e);
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • K(d);P-FLIGHT,XP(D)::R(F)+P(E)
      • P(f);N_GUARD::QAR1(G)
      • P(g);N_GUARD::QAB1(G)
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