MESON Chess Problem Database

Problem Display
PID: 36852 (8/2r5/3N4/4Pp2/1pPkpK2/2pN4/3PP2p/Q6b w - - 0 1)

Banny, Dimitry Nikolaevich

6th HM., Die Schwalbe, 1993

8/2r5/3N4/4Pp2/1pPkpK2/2pN4/3PP2p/Q6b

#2

8 + 8

3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxa7#
    • 1...b3
      • 2.Qxc3#
      • 2.dxc3#
    • 1...e3
      • 2.dxe3#
  • Tries
    • 1.Qf1?
      • threat
        • 2.e3#
      • 1...cxd2
        • 2.Qa1#
      • 1...exd3
        • 2.Qf2#
      • 1...e3
        • 2.dxe3#
      • 1...Rxc4!
    • 1.Qa6?
      • threat
        • 2.Sxf5#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...cxd2
        • 2.Qa1#
      • 1...Rf7
        • 2.Qb6#
      • 1...exd3!
    • 1.Qa7+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rxa7!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qd5#
      • 1...Rxc4
        • 2.Sxf5#
      • 1...cxd2
        • 2.Qa1#
      • 1...exd3
        • 2.e3#
      • 1...Rc5
        • 2.Qxc5#
      • 1...e3
        • 2.dxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD::QAB(A),XR(h)
    • P(f);OGATE::P(B),XP(f)
  • Tries
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • P(C)
      • Vars
        • P(c);OGATEB,XP(B)::QAB(A)
        • P(f);N_GUARD,XS(D)::QAB(A)
        • P(f);OGATE::P(B),XP(f)
      • Refutation
        • R(h);XP(E)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • S(H),XP(g)
      • Vars
        • R(h);OGATE,XP(E)::QAR1(A),XR(h)
        • P(c);OGATEB,XP(B)::QAB(A)
        • R(h);N_GUARD::QAB(A)
      • Refutation
        • P(f);XS(D)
    • Try
      • Q(A);CHECK,N_PINP(c)
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(A),XR(h)
      • Refutation
        • R(h);XQ(A)
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • QAR1(A)
    • Vars
      • R(h);SBLOCK,XP(E)::S(H),XP(g)
      • P(c);OGATEB,XP(B)::QAB(A)
      • P(f);SBLOCK,XS(D)::P(C)
      • R(h);N_GUARD::QAB1(A),XR(h)
      • P(f);OGATE::P(B),XP(f)
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