MESON Chess Problem Database

Problem Display
PID: 102919 (1K6/BP1B1pQ1/p4P1p/2NPk2p/7P/R1P2p2/3N4/3R4 w - - 0 1)

Nefedov, Vladislav Valerevich

Usmanov, Rashid R

Uralski Skazi, 1990

1K6/BP1B1pQ1/p4P1p/2NPk2p/7P/R1P2p2/3N4/3R4

#2

13 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sd3#
    • 1...Kd6
      • 2.Sc4#
  • Tries
    • 1.Sxf3+?
      • 1...Kd6
        • 2.Rxa6#
        • 2.Qf8#
        • 2.Qg3#
      • 1...Kf4!
    • 1.Ra5?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxd5
        • 2.Sce4#
      • 1...Kd6
        • 2.Sc4#
      • 1...f2!
    • 1.Qxh6?
      • threat
        • 2.Sc4#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kxd5!
    • 1.Qg5+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Sde4#
        • 2.Rxa6#
      • 1...hxg5!
  • Keys
    • 1.Sc4+!
      • 1...Kf4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::S(F)
    • K(b);S_FLIGHT::S(B)
  • Tries
    • Try
      • S(B);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(b);S_FLIGHT::S(F)
        • K(b);P-FLIGHT,XP(G)::R(C)+S(F)
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • P(a);
    • Try
      • Q(L);XP(e)
      • Threat
        • S(B)
      • Vars
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);P-FLIGHT,XP(G)
    • Try
      • Q(L);CHECK
      • Refutation
        • P(e);XQ(L)
  • Actual
    • S(B);CHECK
    • Vars
      • K(b);S_FLIGHT::R(A)
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