MESON Chess Problem Database

Problem Display
PID: 184378 (1Q5b/p3B3/1n3pp1/3R1P2/p1p1kN2/2p1PN2/2K2Pb1/3B4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Kudesnik, 2018

1Q5b/p3B3/1n3pp1/3R1P2/p1p1kN2/2p1PN2/2K2Pb1/3B4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...gxf5
      • 2.Rd4#
  • Tries
    • 1.Kxc3?
      • threat
        • 2.Sd2#
      • 1...Bxf3
        • 2.Bc2#
      • 1...Sxd5+!
    • 1.Bxf6?
      • threat
        • 2.Sg5#
        • 2.Re5#
        • 2.Qe5#
        • 2.Qe8#
      • 1...Bxf3
        • 2.Re5#
        • 2.Qe5#
        • 2.Qe8#
      • 1...Sxd5
        • 2.Qe5#
      • 1...Sd7
        • 2.Sg5#
      • 1...Sc8
        • 2.Sg5#
        • 2.Re5#
        • 2.Qe5#
      • 1...g5
        • 2.Sxg5#
        • 2.Re5#
        • 2.Qe5#
        • 2.Qe8#
      • 1...Bxf6!
    • 1.Qb7?
      • threat
        • 2.Re5#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Bxf3!
    • 1.Qc8?
      • threat
        • 2.Rd4#
        • 2.Qe6#
      • 1...Bxf3
        • 2.Qe6#
      • 1...Sxd5
        • 2.Qe6#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Sxc8!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sxc3#
      • 1...Kxf3
        • 2.Qf4#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Sxd5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(h);SBLOCK,XP(H)::R1(G)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(b)
      • Threat
        • S(E)
      • Vars
        • B(a);SBLOCK,XS(E)::B(A)
      • Refutation
        • S(f);CHECK,XR(G)
    • Try
      • B(I);XP(g)
      • Threat
        • DUALS(4)
      • Vars
        • S(f);XR(G)::QAR1(J)
        • S(f);::S(E)
      • Refutation
        • B(j);XB(I)
    • Try
      • Q(J);
      • Threat
        • QAB(J)+R(G),DCHECK
      • Vars
        • S(f);OGATE,P_SPINS(f),XR(G)::QAB1(J),XS(f)
      • Refutation
        • B(a);XS(E)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(E)::QAR2(J)
        • S(f);XR(G)::QAR2(J)
        • S(f);N_GUARD::QAR2(J),XP(d)
      • Refutation
        • S(f);XQ(J)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(b)
    • Vars
      • K(e);S_FLIGHT,XS(E)::QAR1(J)
      • K(e);OGATEB,S_FLIGHT,XR(G)::QAB(J)
      • S(f);SBLOCK,XR(G)::S(F)
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