MESON Chess Problem Database

Problem Display
PID: 277013 (8/8/4R2n/Kp5r/1B1k3r/2RP2p1/Q5B1/8 w - - 0 1)

Rudenko, Valentin Fedorovich

2nd HM., To Mat, 1958

8/8/4R2n/Kp5r/1B1k3r/2RP2p1/Q5B1/8

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Re4#
    • 1...Rh2
      • 2.Re4#
    • 1...Rh3
      • 2.Re4#
    • 1...Re4
      • 2.Rxe4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Sg4
      • 2.Re4#
    • 1...Sf5
      • 2.Qd5#
  • Tries
    • 1.Rc4+?
      • 1...Kxd3
        • 2.Bf1#
        • 2.Qb3#
        • 2.Qc2#
        • 2.Qe2#
      • 1...bxc4+!
    • 1.Qd2?
      • threat
        • 2.Qe3#
      • 1...Re4
        • 2.dxe4#
      • 1...Sg4
        • 2.Qf4#
      • 1...Sf5
        • 2.Bc5#
      • 1...Re5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe3#
      • 1...Re4
        • 2.Qxe4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sg4
        • 2.Qe4#
      • 1...Sf5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::R1(G)
    • R(c);N_GUARD::R1(G),XR(c)
    • R(e);N_GUARD::QAR1(A),XR(e)
    • S(f);S_CUTR(c)::R1(G)
    • S(f);S_CUTR(e)::QAR1(A)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • P(d);CHECK,XR(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(c);OGATE::QAR(A)+P(D),XR(c)
        • S(f);S_CUTR(c)::QAR2(A)
        • S(f);S_CUTR(e)::B(E)
      • Refutation
        • R(e);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(c);N_GUARD::QAR1(A),XR(c)
      • R(e);N_GUARD::QAB1(A),XR(e)
      • S(f);S_CUTR(c)::QAR1(A)
      • S(f);S_CUTR(e)::QAB1(A)
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