MESON Chess Problem Database

Problem Display
PID: 15900 (2K3b1/pP1Q4/4P3/1N1Pp1RN/2p1k3/2p5/qp1PPP2/3r1r2 w - - 0 1)

Rychkov, Vladimir Nikolaevich

1st HM., Sverdlovsk 28. Ty., 1989

2K3b1/pP1Q4/4P3/1N1Pp1RN/2p1k3/2p5/qp1PPP2/3r1r2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.f3#
    • 1...Rg1
      • 2.f3#
    • 1...Rh1
      • 2.f3#
  • Tries
    • 1.Qc6?
      • threat
        • 2.d6#
      • 1...Bxe6+
        • 2.dxe6#
      • 1...Qa6
        • 2.Qxc4#
      • 1...Rxd2!
    • 1.Qc7?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Rxe5#
      • 1...Bxe6+!
    • 1.d4?
      • threat
        • 2.Rxe5#
      • 1...Rxd4
        • 2.Sxc3#
      • 1...exd4
        • 2.Sd6#
      • 1...cxd4 ep!
  • Keys
    • 1.f4!
      • threat
        • 2.Rxe5#
      • 1...Rxf4
        • 2.Sg3#
      • 1...exf4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::P(C)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB(J)+P(E)
      • Vars
        • B(j);CHECK,OGATE,XP(H)::QAB(J)+P(E),XB(j)
        • Q(c);N_GUARD,P_PINP(I)::QAR2(J),XP(f)
      • Refutation
        • R(a);XP(A)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P_SPINP(h),S_FLIGHT,XP(E)::R1(F),XP(h)
      • Refutation
        • B(j);CHECK,XP(H)
    • Try
      • P(A);
      • Threat
        • R1(F),XP(h)
      • Vars
        • R(a);SBLOCK,XP(A)::S(D),XP(e)
        • P(h);SBLOCK,XP(A)::S(D)
      • Refutation
        • P(f);EP,XP(A)
  • Actual
    • P(C);
    • Threat
      • R1(F),XP(h)
    • Vars
      • R(b);SBLOCK,XP(C)::S(G)
      • P(h);SBLOCK,XP(C)::S(G)
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