MESON Chess Problem Database

Problem Display
PID: 15799 (8/2pQ1p1K/2N2p2/1PP5/r3kP1R/1P1p3p/3P2pq/3B2b1 w - - 0 1)

Rychkov, Vladimir Nikolaevich

1st Prize, Sverdlovsk 27. Ty., 1988

8/2pQ1p1K/2N2p2/1PP5/r3kP1R/1P1p3p/3P2pq/3B2b1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.f5#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qxd3#
        • 2.Qd5#
      • 1...Qxf4
        • 2.Qd5#
      • 1...Qg3
        • 2.Qd5#
      • 1...Bd4
        • 2.Qd5#
      • 1...c6
        • 2.Qxd3#
      • 1...Rxb4!
    • 1.Se7?
      • threat
        • 2.Qd5#
      • 1...Rd4
        • 2.Qf5#
      • 1...c6!
    • 1.Qg4?
      • threat
        • 2.Bf3#
      • 1...Kd5
        • 2.Qf5#
      • 1...Qg3!
    • 1.Qxf7?
      • threat
        • 2.Qe6#
      • 1...Kf5
        • 2.Qd5#
      • 1...Bd4!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qf5#
      • 1...Kxf4
        • 2.Qg4#
      • 1...Qxf4
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::R(E)+P(D)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);P_SPINQ(c),XP(D)::QAB1(I)
        • Q(c);::QAB1(I)
        • B(a);::QAB1(I)
        • P(i);::QAB1(I),XP(d)
      • Refutation
        • R(f);XS(H)
    • Try
      • S(H);
      • Threat
        • QAB1(I)
      • Vars
        • R(f);SBLOCK::QAB1(I)
      • Refutation
        • P(i);
    • Try
      • Q(I);
      • Threat
        • B(A)
      • Vars
        • K(g);S_FLIGHT::QAR2(I)
      • Refutation
        • Q(c);
    • Try
      • Q(I);XP(j)
      • Threat
        • QAR2(I)
      • Vars
        • K(g);P_SPINP(h),S_FLIGHT::QAR2(I)
      • Refutation
        • B(a);
  • Actual
    • R(E);
    • Threat
      • QAB1(I)
    • Vars
      • K(g);OGATEB,P-FLIGHT,XP(D)::QAR1(I)
      • Q(c);SBLOCK,XP(D)::QAB1(I)
      • P(h);::QAB1(I),XP(h)
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