MESON Chess Problem Database

Problem Display
PID: 206629 (Q2bKnB1/5N2/3P4/2PrNpP1/3BkPp1/2pR4/2P2R2/1b6 w - - 0 1)

Novitski, Petr Adrinovich

Sachmatija, 2019

Q2bKnB1/5N2/3P4/2PrNpP1/3BkPp1/2pR4/2P2R2/1b6

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg5
      • 2.Sxg5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Re3#
      • 1...Re5+
        • 2.Scxe5#
      • 1...Rxd4
        • 2.Sxd4#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...Rxc5!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Re3#
      • 1...Rxe5+
        • 2.Bxe5#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Rxc5
        • 2.Bxc5#
      • 1...Rxd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(g);XP(H)::S(J),XB(g)
  • Tries
    • Try
      • S(G);N_PINR(e)
      • Threat
        • R1(C)
      • Vars
        • R(e);CHECK::QAB(K)+S(G),XR(e)
        • R(e);XB(D)::QAB(K)+S(G),XR(e)
        • R(e);XP(I)::S(J),XR(e)
      • Refutation
        • R(e);XP(F)
  • Actual
    • Q(K);N_PINR(e)
    • Threat
      • R1(C)
    • Vars
      • R(e);CHECK,OGATE,XS(G)::QAR(K)+B(D),XR(e)
      • R(e);OGATE,P_SPINR(e),XB(D)::QAR1(K),XR(e)
      • R(e);OGATE,XP(F)::QAR(K)+B(D),XR(e)
      • R(e);XP(I)::S(J),XR(e)
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