MESON Chess Problem Database

Problem Display
PID: 135900 (6nB/4p3/Q4r2/2KpkN1N/1R2P2P/3bp1R1/5P2/1B2nq2 w - - 0 1)

Shanshin, Valery Yurevich

Zhuravlev, Andrey Nikolaevich

Springaren, 2009

6nB/4p3/Q4r2/2KpkN1N/1R2P2P/3bp1R1/5P2/1B2nq2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.f4#
    • 1...Qg2
      • 2.f4#
    • 1...Qh3
      • 2.f4#
    • 1...Qg1
      • 2.f4#
    • 1...Qh1
      • 2.f4#
    • 1...e6
      • 2.Qd6#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Rxe3#
      • 1...Bxa6
        • 2.Rg5#
      • 1...e6
        • 2.Sc6#
        • 2.Qxe6#
      • 1...Qh3!
    • 1.Bxf6+?
      • 1...exf6
        • 2.Qd6#
      • 1...Sxf6!
  • Keys
    • 1.exd5!
      • threat
        • 2.Qe6#
      • 1...Kxf5
        • 2.Rg5#
      • 1...Bxf5
        • 2.Qa1#
      • 1...Bxa6
        • 2.Rxe3#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD::P(B)
    • P(h);N_GUARD::QAB1(J)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR1(J)
      • Vars
        • K(f);N_SPINR(g),OGATEB,P-FLIGHT,P_SPINB(c),XP(E)::R1(C),XP(d)
        • B(c);XQ(J)::R(C)
      • Refutation
        • Q(b);
    • Try
      • B(K);CHECK,XR(g)
      • Vars
        • P(h);XB(K)::QAB1(J)
      • Refutation
        • S(i);XB(K)
  • Actual
    • P(E);XP(e)
    • Threat
      • QAR1(J)
    • Vars
      • K(f);N_SPINR(g),OGATEB,P-FLIGHT,P_SPINB(c),XS(H)::R1(C)
      • B(c);XS(H)::QAB(J)
      • B(c);N_GUARD,XQ(J)::R(C),XP(d)
      • P(h);::QAR1(J),XP(h)
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