MESON Chess Problem Database

Problem Display
PID: 23723 (B4r1b/1R2pQ2/p3p3/r4PB1/2N1k3/2P1N3/3PK3/4n3 w - - 0 1)

Markovtsy, Vassyl Yuriovich

Die Schwalbe, 1996

B4r1b/1R2pQ2/p3p3/r4PB1/2N1k3/2P1N3/3PK3/4n3

#2

10 + 8

328 Schweizerische Schachzeitung 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rb8#
    • 1...Ra2
      • 2.Rb8#
    • 1...Ra3
      • 2.Rb8#
    • 1...Ra4
      • 2.Rb8#
    • 1...Rxf7
      • 2.Rb5#
    • 1...Sc2
      • 2.d3#
    • 1...Sg2
      • 2.d3#
    • 1...Sf3
      • 2.d3#
    • 1...exf5
      • 2.Rxe7#
  • Tries
    • 1.Sd6+?
      • 1...Ke5
        • 2.Qxe6#
      • 1...exd6!
    • 1.Rxe7+?
      • 1...Rd5
        • 2.Bxd5#
      • 1...Rxa8!
    • 1.Qxe6+?
      • 1...Re5
        • 2.Rb8#
      • 1...Be5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh4#
      • 1...Raxf5
        • 2.Rb8#
      • 1...Rfxf5
        • 2.Rb5#
      • 1...exf5
        • 2.Rxe7#
      • 1...Be5
        • 2.f6#
      • 1...Sg2
        • 2.d3#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD::B(J)+R(H)
    • R(c);N_GUARD,P_PINP(A)::B(J)+R(H)
    • R(g);N_GUARD,XQ(I)::B(J)+R(H)
    • S(a);N_GUARD::P(A)
    • P(e);XP(F)::B(J)+R(H),DCHECK,XP(f)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(I),XP(e)
      • Refutation
        • P(f);XS(E)
    • Try
      • R(H);CHECK,P_PINP(e),XP(f)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(J),XR(c)
      • Refutation
        • R(g);XB(J)
    • Try
      • Q(I);CHECK,XP(e)
      • Vars
        • R(c);P_SPINR(c)::B(J)+R(H)
      • Refutation
        • B(h);P_SPINB(h)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • R(c);N_GUARD,P_SPINR(c),XP(F)::B(J)+R(H)
      • R(g);N_GUARD,P_SPINR(g),XP(F)::B(J)+R(H)
      • P(e);P_SPINP(e),XP(F)::B(J)+R(H),DCHECK,XP(f)
      • B(h);S_CUTR(c)::QAB(I)+P(F)
      • S(a);N_GUARD::P(A)
      • S(a);N_GUARD::QAB(I)
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