MESON Chess Problem Database

Problem Display
PID: 149209 (6rq/n2QN3/1pp3p1/2P1p3/1K2k1B1/1NpRppPb/2r5/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Best Problems, 2010

6rq/n2QN3/1pp3p1/2P1p3/1K2k1B1/1NpRppPb/2r5/8

#2

8 + 13

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Bxf3#
    • 1...bxc5+
      • 2.Sxc5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Rd4#
        • 2.Qc4#
      • 1...bxc5+
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Qc4#
      • 1...Rd2
        • 2.Qc4#
      • 1...Rd8
        • 2.Qxg6#
      • 1...e2
        • 2.Qc4#
      • 1...b5
        • 2.Rd4#
      • 1...Sb5!
    • 1.cxb6?
      • threat
        • 2.Sc5#
      • 1...c5+
        • 2.Sxc5#
      • 1...Rb2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rxe3#
      • 1...bxc5+
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Sxc3#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Qh6
        • 2.Sf6#
      • 1...Re2
        • 2.Sxc3#
      • 1...e2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);::B(E),XP(d)
    • P(h);CHECK,XP(F)::S(A),XP(h)
    • P(j);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);CHECK,XP(F)::S(A),XP(h)
        • K(f);N_SPINP(g),S_FLIGHT,XR(B)::QAB1(G)
        • R(a);::QAR2(G)
        • R(l);N_GUARD::QAB(G),XP(j)
        • P(c);::QAR2(G)
        • P(h);::R1(B)
      • Refutation
        • S(k);
    • Try
      • P(F);XP(h)
      • Threat
        • S(A)
      • Vars
        • P(i);CHECK::S(A),XP(i)
      • Refutation
        • R(a);P_PINS(A)
  • Actual
    • S(H);
    • Threat
      • R1(B),XP(c)
    • Vars
      • P(h);CHECK,XP(F)::S(A),XP(h)
      • K(f);S_FLIGHT,XR(B)::QAR(G)+S(H),XP(b)
      • P(i);OGATE,XS(H)::QAB1(G),XP(i)
      • Q(m);N_GUARD::S(H)
      • R(a);N_GUARD::S(H),XP(b)
      • P(c);::R1(B)
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