MESON Chess Problem Database

Problem Display
PID: 139461 (4n3/2p2B2/3p3K/2pP1k2/5n2/1p1PR1RP/1Q6/B3rNr1 w - - 0 1)

Novitski, Petr Adrinovich

Troll, 2010

4n3/2p2B2/3p3K/2pP1k2/5n2/1p1PR1RP/1Q6/B3rNr1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Sxe3#
    • 1...Rxf1
      • 2.Rg5#
    • 1...Rh1
      • 2.Rg5#
    • 1...Rxg3
      • 2.Sxg3#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sg7
      • 2.Qf6#
  • Tries
    • 1.Ref3?
      • threat
        • 2.Bg6#
      • 1...Re6+
        • 2.Bxe6#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Re5!
  • Keys
    • 1.Rgf3!
      • threat
        • 2.Be6#
      • 1...Rg6+
        • 2.Bxg6#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Sg7
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);XR(E)::S(B),XR(a)
    • R(b);N_GUARD,XS(B)::R1(F)
    • R(b);N_GUARD,P_PINP(G)::R1(F)
    • R(b);XR(F)::S(B),XR(b)
    • S(i);N_GUARD::QAR1(C),XS(i)
    • S(i);N_GUARD::QAR1(C)
  • Tries
    • Try
      • R(E);P_PINS(d)
      • Threat
        • B(J)
      • Vars
        • R(a);CHECK,N_GUARD::B(J),XR(a)
        • R(b);XR(F)::S(B),XR(b)
      • Refutation
        • R(a);
  • Actual
    • R(F);P_PINS(d)
    • Threat
      • B(J)
    • Vars
      • R(b);CHECK,N_GUARD::B(J),XR(b)
      • R(a);XR(E)::S(B),XR(a)
      • S(i);N_GUARD::QAR1(C)
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