MESON Chess Problem Database

Problem Display
PID: 15192 (8/6Q1/4Pp2/pr1P1B2/P2k4/NbpN2P1/p1p5/n1K1R3 w - - 0 1)

Rychkov, Vladimir Nikolaevich

7th HM., 64 Shakhmatnoe obozrenie, 1981

8/6Q1/4Pp2/pr1P1B2/P2k4/NbpN2P1/p1p5/n1K1R3

#2

10 + 9

4001 Izbrannie Shakmatny Zadachi Vladimira Rychkova 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qd7#
    • 1...Rxd5
      • 2.Qg4#
    • 1...Bxd5
      • 2.Qxf6#
  • Tries
    • 1.Re4+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kxd3!
    • 1.Re5?
      • threat
        • 2.Qg4#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Bxd5!
    • 1.Qa7+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rb6!
  • Keys
    • 1.Qc7!
      • 1...Kxd5
        • 2.Qd7#
      • 1...Rxd5
        • 2.Qf4#
      • 1...Bxa4
        • 2.Qc4#
      • 1...Bxd5
        • 2.Sxb5#
      • 1...Rb4
        • 2.Qc5#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rb6
        • 2.Qc5#
      • 1...Rb7
        • 2.Qc5#
      • 1...Rb8
        • 2.Qc5#
      • 1...Bc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINP(i),OGATEB,P-FLIGHT,XP(G)::QAR2(J)
    • R(h);SBLOCK,XP(G)::QAR(J)
    • B(d);SBLOCK,XP(G)::QAB(J),XP(i)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(f);N_SPINP(i),P-FLIGHT,XP(G)::QAR2(J)
      • Refutation
        • K(f);N_SPINP(i),P-FLIGHT,XS(D)
    • Try
      • R(B);N_PINP(i)
      • Threat
        • QAR(J)
      • Vars
        • P(i);OGATE,P_SPINP(i),XR(B)::QAB1(J),XP(i)
      • Refutation
        • B(d);XP(G)
    • Try
      • Q(J);CHECK,N_PINP(i)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XP(G)::QAR2(J)
        • R(h);N_GUARD,P_SPINR(h)::QAB1(J),XR(h)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • Q(J);N_PINP(i)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XP(G)::QAR2(J)
      • R(h);SBLOCK,XP(G)::QAR2(J)
      • B(d);N_GUARD,XP(F)::QAR1(J)
      • B(d);SBLOCK,XP(G)::S(C),XR(h)
      • R(h);N_GUARD::QAB1(J)
      • R(h);N_GUARD::QAB1(J),XR(h)
      • B(d);N_GUARD::QAR1(J),XB(d)
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