MESON Chess Problem Database

Problem Display
PID: 287164 (1nK5/r1nP3B/p1RpNp2/Pp1kb3/3NR3/2p4Q/6P1/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problem Paradise, 2018

1nK5/r1nP3B/p1RpNp2/Pp1kb3/3NR3/2p4Q/6P1/8

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Sxc7#
    • 1...Bf4
      • 2.Sxf4#
    • 1...Sxe6
      • 2.Qxe6#
    • 1...c2
      • 2.Qb3#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Sb4#
      • 1...Sxc6
        • 2.Se3#
      • 1...b4
        • 2.Sxb4#
      • 1...f5!
    • 1.Qf5?
      • threat
        • 2.Sf4#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Sxc6!
    • 1.Qxc3?
      • threat
        • 2.Qb3#
      • 1...Bxd4
        • 2.Sf4#
      • 1...f5!
    • 1.Qf3?
      • threat
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Rf4#
        • 2.Rg4#
        • 2.Rh4#
      • 1...Bxd4
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
      • 1...Sxe6
        • 2.Rf4#
        • 2.Rg4#
        • 2.Rh4#
      • 1...Bh2
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
      • 1...Bg3
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
      • 1...Bf4
        • 2.Sxf4#
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
      • 1...Sxc6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kxc6
        • 2.Se7#
      • 1...Kxe6
        • 2.Bg8#
      • 1...Sxc6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD::S(G),XS(i)
    • B(d);N_GUARD::S(G),XB(d)
    • S(i);OGATE,XS(G)::QAB1(B),XS(i)
    • P(a);OGATE::QAB(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(c);S_FLIGHT,XR(F)::S(C)
        • S(j);SBLOCK,XR(F)::S(C)
        • P(b);::S(C),XP(b)
      • Refutation
        • P(g);
    • Try
      • Q(B);P_PINB(d)
      • Threat
        • S(G)
      • Vars
        • S(i);OGATE,XS(G)::QAB1(B),XS(i)
      • Refutation
        • S(j);XR(F)
    • Try
      • Q(B);XP(a)
      • Threat
        • QAB(B)
      • Vars
        • B(d);N_GUARD,XS(C)::S(G)
      • Refutation
        • P(g);
    • Try
      • Q(B);
      • Threat
        • DUALS(6)
      • Refutation
        • S(j);XR(F)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • K(c);S_FLIGHT,XR(F)::S(C)
      • K(c);OGATEB,P_SPINB(d),P_SPINP(f),S_FLIGHT,XS(G)::B(I)
      • S(j);SBLOCK,XR(F)::S(C)
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