MESON Chess Problem Database

Problem Display
PID: 179740 (4B1K1/6Rp/2Pkp3/R2NpP2/3q4/3N4/3Q4/2rb4 w - - 0 1)

Gorbatenko, Yuri Grigorevich

Kopnin, Aleksey Grigorevich

Shakhmaty v SSSR, 1979

4B1K1/6Rp/2Pkp3/R2NpP2/3q4/3N4/3Q4/2rb4

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Rd7#
    • 1...exd5
      • 2.Qh6#
    • 1...exf5
      • 2.Qh6#
  • Tries
    • 1.S3b4?
      • threat
        • 2.Rd7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...exf5
        • 2.Qh6#
      • 1...Qg1
        • 2.Se3#
      • 1...Qa7
        • 2.Sb6#
      • 1...Qg4
        • 2.Sf4#
      • 1...e4!
    • 1.Sb6?
      • threat
        • 2.Sc8#
      • 1...Qxb6
        • 2.Sc5#
      • 1...Rxc6
        • 2.Rd7#
      • 1...exf5
        • 2.Qh6#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Rc5!
  • Keys
    • 1.S5b4!
      • threat
        • 2.Rd7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...exf5
        • 2.Qh6#
      • 1...Qg1
        • 2.Sf2#
      • 1...Qa7
        • 2.Sc5#
      • 1...Qg4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK,XP(F)::R1(G)
    • P(f);OGATEB,XS(D)::QAR(A)
    • P(f);OGATEB,XP(E)::QAR(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(G)
      • Vars
        • Q(c);XS(B)::QAR(A)+S(D),XQ(c)
        • P(f);OGATEB,XP(E)::QAR(A)
        • Q(c);P_PINR(G)::QAR(A)+S(D)
        • Q(c);::QAR(A)+S(D)
      • Refutation
        • P(d);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • Q(c);XS(D)::QAR(A)+S(B)
        • R(a);SBLOCK,XP(F)::R1(G)
        • P(f);OGATEB,XP(E)::QAR(A)
        • Q(c);::QAR(A)+S(B),XQ(c)
      • Refutation
        • R(a);
  • Actual
    • S(D);
    • Threat
      • R1(G)
    • Vars
      • Q(c);XS(D)::QAR(A)+S(B),XQ(c)
      • P(f);OGATEB,XP(E)::QAR(A)
      • Q(c);P_PINR(G)::QAR(A)+S(B)
      • Q(c);::QAR(A)+S(B)
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