MESON Chess Problem Database

Problem Display
PID: 56787 (4R3/3p2bK/5k2/1b3Bp1/r5P1/1Q3N2/rn6/5R2 w - - 0 1)

Shedey, Sergey Oleksandrovich

2nd Prize, Odessa, 1967-1968

4R3/3p2bK/5k2/1b3Bp1/r5P1/1Q3N2/rn6/5R2

#2

7 + 8

3772 FIDE Album (1965-1967) 1976
721 Variantim 2005

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Bg6?
      • threat
        • 2.Qf7#
      • 1...Rc4
        • 2.Sd4#
      • 1...Bc4
        • 2.Qc3#
      • 1...Sc4
        • 2.Sd2#
      • 1...d5!
    • 1.Re6+?
      • 1...dxe6
        • 2.Qxe6#
      • 1...Kf7!
    • 1.Qg8?
      • threat
        • 2.Qxg7#
      • 1...Bh6
        • 2.Qg6#
      • 1...Bf8
        • 2.Qg6#
        • 2.Qxf8#
      • 1...Bh8
        • 2.Qg6#
        • 2.Qf8#
      • 1...Rxg4!
    • 1.Qc3+?
      • 1...Kf7
        • 2.Bg6#
      • 1...Rd4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qf7#
      • 1...Rc4
        • 2.Be4#
      • 1...Bc4
        • 2.Bd3#
      • 1...Sc4
        • 2.Bc2#
      • 1...d5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD::QAR1(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR1(B)
      • Vars
        • R(c);S_CUTB(d)::R(A)+S(C)
        • B(d);S_CUTR(c)::QAB(B)
        • S(b);S_CUTB(d),S_CUTR(c)::R(A)+S(C)
      • Refutation
        • P(g);
    • Try
      • R(G);CHECK
      • Vars
        • P(g);OGATE,XR(G)::QAR1(B),XP(g)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XB(h)
      • Vars
        • B(h);OGATE::QAR1(B)
      • Refutation
        • R(c);XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT::B(E)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • R(c);S_CUTB(d)::R(A)+B(E)
      • B(d);S_CUTR(c)::R(A)+B(E)
      • S(b);S_CUTB(d),S_CUTR(c)::R(A)+B(E)
      • P(g);N_GUARD::R1(G)
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