MESON Chess Problem Database

Problem Display
PID: 107849 (8/1K1nB3/2N3N1/2pkp3/R2p3R/4p2B/2p1P3/Q1n5 w - - 0 1)

Burmistrov, Sergey Gennadevich

Molodoi Leninets, 1985

8/1K1nB3/2N3N1/2pkp3/R2p3R/4p2B/2p1P3/Q1n5

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Sb4#
    • 1...e4
      • 2.Sf4#
  • Tries
    • 1.Bg2+?
      • 1...e4
        • 2.Sf4#
      • 1...Ke6!
    • 1.Ra5?
      • 1...Kc4
        • 2.Be6#
      • 1...Sxe2
        • 2.Qa2#
      • 1...Sa2
        • 2.Qxa2#
      • 1...Sd3
        • 2.Qa2#
      • 1...Sb6
        • 2.Rxc5#
      • 1...Sf6
        • 2.Rxc5#
      • 1...Sb8
        • 2.Rxc5#
      • 1...Sf8
        • 2.Rxc5#
      • 1...d3
        • 2.Sb4#
      • 1...e4
        • 2.Qxd4#
      • 1...Sb3!
    • 1.Qc3?
      • threat
        • 2.Qc4#
      • 1...Sb6
        • 2.Qxc5#
      • 1...c4
        • 2.Sb4#
        • 2.Qxc4#
      • 1...dxc3!
  • Keys
    • 1.Rh5!
      • 1...Ke4
        • 2.Bg2#
      • 1...Sxe2
        • 2.Qh1#
      • 1...Sa2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sb6
        • 2.Rxe5#
      • 1...Sf6
        • 2.Rxe5#
      • 1...Sb8
        • 2.Rxe5#
      • 1...Sf8
        • 2.Rxe5#
      • 1...d3
        • 2.Sf4#
      • 1...c4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD,SBLOCK::S(F)
    • P(g);N_GUARD,SBLOCK::S(G)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • P(g);P_SPINP(g)::S(G)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(D);P_PINP(e)
      • Vars
        • K(f);N_SPINP(e),P_SPINP(d),S_FLIGHT::B(C)
        • S(a);N_GUARD,XP(B)::QAB(A)
        • S(a);N_GUARD::QAB(A),XS(a)
        • S(a);N_GUARD::QAB(A)
        • S(h);N_GUARD::R1(D),XP(e)
        • P(d);::S(F)
        • P(g);N_GUARD::QAR1(A),XP(d)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(h);N_GUARD::QAR1(A),XP(e)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • R(E);P_PINP(g)
    • Vars
      • K(f);N_SPINP(g),P_SPINP(d),S_FLIGHT::B(C)
      • S(a);OGATE,XP(B)::QAB(A)
      • S(a);OGATE::QAB(A)
      • S(h);N_GUARD::R1(E),XP(g)
      • P(d);::S(G)
      • P(e);N_GUARD::QAR1(A),XP(d)
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