MESON Chess Problem Database

Problem Display
PID: 86932 (6Qn/8/3R4/2PN1P1r/4k2P/2PNp3/2p1p2n/4B2K w - - 0 1)

Gorbatenko, Yuri Grigorevich

Usmanov, Rashid R

Uralski Problemist, 2000

6Qn/8/3R4/2PN1P1r/4k2P/2PNp3/2p1p2n/4B2K

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Sf6#
    • 1...Kf3
      • 2.Qg2#
    • 1...Kxf5
      • 2.Qe6#
  • Tries
    • 1.Sf2+?
      • 1...Kf3
        • 2.Qg2#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qe6#
      • 1...exf2!
    • 1.Sf6+?
      • 1...Kf3
        • 2.Qd5#
        • 2.Qg2#
        • 2.Qg3#
        • 2.Qa8#
      • 1...Kxf5!
    • 1.Se7?
      • threat
        • 2.Qd5#
        • 2.Qa8#
      • 1...Kf3
        • 2.Qg2#
      • 1...Sf7
        • 2.Qa8#
      • 1...Rxf5!
    • 1.Qe6+?
      • 1...Kxd3
        • 2.Sxe3#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Kf3!
    • 1.Qg2+?
      • 1...Kxd3
        • 2.Sb6#
      • 1...Kxf5
        • 2.Sxe3#
        • 2.Se7#
        • 2.Rf6#
      • 1...Sf3!
    • 1.Qg4+?
      • 1...Kxd3
        • 2.Sb4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
        • 2.Qd4#
      • 1...Sxg4!
    • 1.Qe8+?
      • 1...Kxd3
        • 2.Sxe3#
        • 2.Sb6#
      • 1...Kxf5
        • 2.Sxe3#
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Se7#
      • 1...Kxd3
        • 2.Sb6#
      • 1...Kf3
        • 2.Sf6#
      • 1...Kxf5
        • 2.Sxe3#
      • 1...Rxf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT,XS(D)::R(I)+S(G)
    • K(e);S_FLIGHT::QAB1(J)
    • K(e);S_FLIGHT,XP(H)::QAB1(J)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(J)
        • K(e);P-FLIGHT::QAR1(J)
        • K(e);S_FLIGHT,XP(H)::QAB1(J)
      • Refutation
        • P(d);XS(D)
    • Try
      • S(G);CHECK
      • Refutation
        • K(e);S_FLIGHT,XP(H)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB1(J)
        • S(g);::QAB(J)
      • Refutation
        • R(f);XP(H)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(D)::R(I)+S(G)
      • Refutation
        • S(c);P_PINP(E),P_SPINS(c)
    • Try
      • Q(J);CHECK
      • Refutation
        • S(c);P_PINP(E),XQ(J)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+S(G)
    • Vars
      • K(e);S_FLIGHT,XS(D)::R(I)+S(G)
      • K(e);S_FLIGHT::QAB(J)+S(G)
      • K(e);S_FLIGHT,XP(H)::S(G),XP(d)
      • R(f);SBLOCK,XP(H)::QAB(J)+S(G),DCHECK
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