MESON Chess Problem Database

Problem Display
PID: 35549 (7Q/8/2K1P3/3pNPR1/1B1kp3/6P1/4R3/5n2 w - - 0 1)

Zhuravlev, Andrey Nikolaevich

2nd Prize, US Problem Bulletin, 1992

7Q/8/2K1P3/3pNPR1/1B1kp3/6P1/4R3/5n2

#2

9 + 4

3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rd2#
    • 1...e3
      • 2.Rg4#
  • Tries
    • 1.Sd3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxd3!
    • 1.Sf3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Sc4+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Sg4+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Sg6+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Sd7+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Sf7+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd3!
    • 1.Rc2?
      • threat
        • 2.Bc5#
      • 1...e3
        • 2.Rg4#
      • 1...Ke3!
    • 1.Qa8?
      • threat
        • 2.Qa1#
      • 1...Kxe5
        • 2.Qh8#
      • 1...e3!
    • 1.Qd8?
      • threat
        • 2.Qxd5#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Se3!
  • Keys
    • 1.Qh1!
      • 1...Kxe5
        • 2.Qh8#
      • 1...Sxg3
        • 2.Qa1#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sh2
        • 2.Qa1#
      • 1...Se3
        • 2.Qa1#
      • 1...e3
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::R(A)
    • P(c);OGATEB::R(F)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT,XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(D)::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • B(C)
      • Vars
        • P(c);OGATEB,SBLOCK::R(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • K(b);OGATEB,P_SPINP(c),S_FLIGHT,XS(D)::QAB(I)
      • Refutation
        • P(c);
    • Try
      • Q(I);P_PINP(d)
      • Threat
        • QAR1(I),XP(d)
      • Vars
        • K(b);N_SPINP(d),OGATEB,P_SPINP(c),S_FLIGHT,XS(D)::QAB(I)
      • Refutation
        • S(a);
  • Actual
    • Q(I);
    • Vars
      • K(b);OGATEB,P_SPINP(c),S_FLIGHT,XS(D)::QAB(I)
      • S(a);OGATE,XP(B)::QAB(I)
      • S(a);OGATE::QAB(I)
      • P(c);OGATE::QAR1(I),XP(d)
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