MESON Chess Problem Database

Problem Display
PID: 153368 (1Bn1NN1n/q1p5/1p1rB3/1R1Pk3/p6R/4r1P1/5P1K/1b5Q w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Rudenko, Valentin Fedorovich

3rd HM., Chepizhni-70 JT, 2004

1Bn1NN1n/q1p5/1p1rB3/1R1Pk3/p6R/4r1P1/5P1K/1b5Q

#2

11 + 10

15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Re4#
      • 2.Qe4#
    • 1...Rxd5
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Rc6
      • 2.Sd7#
      • 2.dxc6#
    • 1...Rxe6
      • 2.dxe6#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Bd3
      • 2.Qa1#
    • 1...c5
      • 2.dxc5 ep#
    • 1...c6
      • 2.dxc6#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qf4#
        • 2.Qf6#
      • 1...Rxe6
        • 2.Sd7#
        • 2.Qf4#
        • 2.dxe6#
      • 1...Re4
        • 2.Qf6#
      • 1...Be4
        • 2.Qf6#
      • 1...Bf5
        • 2.Qf4#
        • 2.Qxf5#
      • 1...Sg6
        • 2.Qf6#
      • 1...Rxf3!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qd4#
      • 1...Rxe6
        • 2.dxe6#
      • 1...Rd3
        • 2.Qh5#
      • 1...Re4
        • 2.Rh5#
      • 1...Bd3
        • 2.Qa1#
      • 1...Be4
        • 2.f4#
      • 1...c5
        • 2.dxc5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);OGATE,P_SPINP(h),XB(H)::R(F)+P(G),XR(f)
    • R(f);N_GUARD,P_SPINP(h)::S(K),XR(f)
    • B(a);OGATE::QAB(A)
    • P(h);OGATE,P_SPINR(f)::R(F)+P(G),XP(h),EP
    • P(h);OGATE,P_SPINR(f)::R(F)+P(G),XP(h)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(A)
        • B(a);::QAB1(A)
        • S(j);::QAB1(A)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(f);OGATE,P_SPINP(h),XB(H)::R(F)+P(G),XR(f)
      • R(b);S_CUTB(a)::QAR(A)
      • R(b);SBLOCK,S_CUTB(a)::R(E)
      • B(a);OGATE::QAB(A)
      • B(a);SBLOCK::P(B)
      • P(h);OGATE,P_SPINR(f)::R(F)+P(G),XP(h),EP
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