MESON Chess Problem Database

Problem Display
PID: 29665 (5N2/1P2p3/Q7/2Pk1NBR/5P2/1PbbP1K1/8/1BR1n3 w - - 0 1)

Kopaev, Viacheslav Georgievich

Springaren, 1993

5N2/1P2p3/Q7/2Pk1NBR/5P2/1PbbP1K1/8/1BR1n3

#2

13 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qe6#
    • 1...Bb2
      • 2.Qe6#
    • 1...Bd2
      • 2.Qe6#
    • 1...Bb4
      • 2.Qe6#
    • 1...Bd4
      • 2.Qe6#
    • 1...Ba5
      • 2.Qe6#
    • 1...Bf6
      • 2.Qe6#
    • 1...Bg7
      • 2.Qe6#
    • 1...Bh8
      • 2.Qe6#
  • Tries
    • 1.Bxe7?
      • threat
        • 2.Qe6#
      • 1...Ke4
        • 2.Qc6#
      • 1...Bxa6
        • 2.Sd4#
      • 1...Be5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qe6#
      • 1...Kxc5
        • 2.Bxe7#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Bxa6
        • 2.Bxe7#
      • 1...Bb5
        • 2.Bxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • B(b);::QAB1(K)
  • Tries
    • Try
      • B(I);XP(e)
      • Threat
        • QAB1(K)
      • Vars
        • K(d);P_SPINB(c),S_FLIGHT::QAB(K)
        • B(c);N_GUARD,XQ(K)::R(J)+S(H)
      • Refutation
        • B(b);P_PINP(F)
  • Actual
    • S(H);
    • Threat
      • QAB1(K)
    • Vars
      • K(d);P_SPINB(c),S_FLIGHT::QAR2(K)
      • K(d);P-FLIGHT,P_SPINB(b),XP(G)::R(J)+B(I),DCHECK,XP(e)
      • B(b);XS(H)::QAB1(K)
      • B(c);N_GUARD,XQ(K)::R(J)+B(I),XP(e)
      • B(c);N_GUARD::R(J)+B(I),XP(e)
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