MESON Chess Problem Database

Problem Display
PID: 169001 (8/3Q4/r1p1N1pK/bR2P2R/3BkN2/1n5p/3pP3/7n w - - 0 1)

Shanshin, Valery Yurevich

SuperProblem, 2017

8/3Q4/r1p1N1pK/bR2P2R/3BkN2/1n5p/3pP3/7n

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxc6#
    • 1...Ra8
      • 2.Qxc6#
    • 1...Bb6
      • 2.Qxc6#
    • 1...Sxd4
      • 2.Qxd4#
    • 1...cxb5
      • 2.Qd5#
    • 1...c5
      • 2.Qd5#
    • 1...gxh5
      • 2.Qh7#
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sg5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...g5
        • 2.Sxg5#
        • 2.Qh7#
      • 1...Bd8!
    • 1.Sxh3?
      • threat
        • 2.Seg5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...g5
        • 2.Sexg5#
        • 2.Qh7#
      • 1...Bd8!
    • 1.Sxg6?
      • threat
        • 2.Sg5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Bd8!
    • 1.Rb6?
      • threat
        • 2.Qxc6#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...gxh5
        • 2.Qh7#
      • 1...g5
        • 2.Qh7#
      • 1...c5
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#
      • 1...Rxb6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Sxd4
        • 2.Sc5#
      • 1...cxd5
        • 2.Qxd5#
      • 1...gxh5
        • 2.Qh7#
      • 1...g5
        • 2.Qh7#
      • 1...Bd8
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD::QAB(I),XP(h)
    • B(f);S_CUTR(g)::QAB(I),XP(h)
    • S(c);OGATE,XB(B)::QAR1(I),XS(c)
    • P(h);N_GUARD,XR(D)::QAB1(I)
    • P(h);N_GUARD::QAB1(I)
    • P(i);OGATEB,XR(F)::QAB(I)
    • P(i);OGATEB::QAB(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(G)
      • Vars
        • S(c);OGATE,XB(B)::QAR1(I),XS(c)
      • Refutation
        • B(f);
    • Try
      • S(C);XP(d)
      • Threat
        • S(G)
      • Vars
        • S(c);OGATE,XB(B)::QAR1(I),XS(c)
      • Refutation
        • B(f);
    • Try
      • S(C);XP(i)
      • Threat
        • S(G)
      • Vars
        • S(c);OGATE,XB(B)::QAR1(I),XS(c)
      • Refutation
        • B(f);
    • Try
      • R(D);
      • Threat
        • QAB(I),XP(h)
      • Vars
        • S(c);OGATE,XB(B)::QAR1(I),XS(c)
        • P(i);OGATEB,XR(F)::QAB(I)
        • P(i);OGATEB::QAB(I)
      • Refutation
        • R(g);XR(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • S(c);N_GUARD,SBLOCK,XB(B)::S(G)
      • P(h);OGATE,XS(C)::QAB1(I),XP(h)
      • P(i);OGATEB,XR(F)::QAB(I)
      • P(i);OGATEB::QAB(I)
      • B(f);N_GUARD::S(C)
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