MESON Chess Problem Database

Problem Display
PID: 123432 (r4n1q/b3N1B1/P2Np3/4np1p/1P1k1p2/1Ppb4/2pR1K2/Q7 w - - 0 1)

Skrzek, Janusz

Spisska Borovicka, 1997

r4n1q/b3N1B1/P2Np3/4np1p/1P1k1p2/1Ppb4/2pR1K2/Q7

#2

9 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1?
      • threat
        • 2.Sb5#
        • 2.Sc6#
      • 1...Qxg7
        • 2.Sb5#
      • 1...cxd2
        • 2.Qa1#
      • 1...Rb8
        • 2.Sc6#
      • 1...Rc8
        • 2.Sb5#
      • 1...f3!
    • 1.Qa5?
      • threat
        • 2.Sc6#
        • 2.Qxe5#
      • 1...cxd2
        • 2.Qa1#
        • 2.Qxe5#
      • 1...Rc8
        • 2.Qxe5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sg6
        • 2.Sc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Qxg7!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sb5#
        • 2.Qxe5#
      • 1...Qxg7
        • 2.Sb5#
      • 1...cxd2
        • 2.Qa1#
        • 2.Qxe5#
      • 1...Rb8
        • 2.Qxe5#
      • 1...Sg6
        • 2.Sb5#
      • 1...Sd7
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • Q(m);N_SPINS(f),XB(I)::S(G)
        • P(b);N_SPINB(c),OGATEB,XR(B)::QAB(A)
        • R(k);::S(H)
        • R(k);::S(G)
      • Refutation
        • P(e);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(k);::QAB1(A),XS(f)
        • B(j);N_GUARD::QAB1(A),XB(j)
        • S(l);::S(H)
      • Refutation
        • Q(m);N_SPINS(f),XB(I)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • Q(m);N_SPINS(f),XB(I)::S(G)
      • R(k);::QAB1(A),XS(f)
      • S(l);::S(G)
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