MESON Chess Problem Database

Problem Display
PID: 96262 (8/4K3/4N3/2p1k1pn/2P1r1P1/2P1q1p1/5N2/2B4Q w - - 0 1)

Armeni, Alberto

Best Problems, 2005

8/4K3/4N3/2p1k1pn/2P1r1P1/2P1q1p1/5N2/2B4Q

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Sd3#
      • 2.Qxe4#
    • 1...Qd2
      • 2.Qxe4#
    • 1...Qf4
      • 2.Sd3#
    • 1...Qe1
      • 2.Sd3#
    • 1...Qxc3
      • 2.Qxe4#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Rf4
      • 2.Qd5#
    • 1...Rxg4
      • 2.Qd5#
    • 1...Sf4
      • 2.Qh8#
  • Tries
    • 1.Sf8?
      • threat
        • 2.Sg6#
      • 1...Kf4+
        • 2.Qxe4#
      • 1...Qxc3
        • 2.Qxe4#
      • 1...Sf4
        • 2.Sd7#
        • 2.Qh8#
      • 1...Rxg4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4+
        • 2.Qxe4#
      • 1...Qxf4
        • 2.Sd3#
      • 1...Qxc3
        • 2.Qxe4#
      • 1...Rxf4
        • 2.Qd5#
      • 1...Sxf4
        • 2.Qh8#
      • 1...gxf4
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAR1(B),XR(c)
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD,XP(D)::QAR1(B),XR(c)
    • Q(a);N_GUARD::S(C),XQ(a)
    • R(c);OGATE::QAR1(B)
    • R(c);OGATE,XP(F)::QAR1(B)
    • S(g);OGATE::QAB(B)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(e);CHECK,P_SPINQ(a),S_FLIGHT::QAR1(B),XR(c)
        • Q(a);N_GUARD,XP(D)::QAR1(B),XR(c)
      • Refutation
        • R(c);XP(F)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(e);CHECK,P_SPINQ(a),S_FLIGHT,XS(G)::QAR1(B),XR(c)
      • Q(a);N_GUARD,XS(G)::S(C)
      • Q(a);N_GUARD,XP(D)::QAR1(B),XR(c)
      • R(c);OGATE,SBLOCK,XS(G)::QAR1(B)
      • S(g);OGATE,SBLOCK,XS(G)::QAB(B)
      • P(f);OGATEB,SBLOCK,XS(G)::QAR(B),XS(g)
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