MESON Chess Problem Database

Problem Display
PID: 164635 (n4B2/KN3p2/B7/NPp4R/1k5b/1P3rRr/4nq2/Q7 w - - 0 1)

Mosiashvili, Givi

Pilchenko, Viacheslav Karlovich

3rd Prize, Zadachi i Etyudi, 2014

n4B2/KN3p2/B7/NPp4R/1k5b/1P3rRr/4nq2/Q7

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Bxc5#
    • 1...Qxg3
      • 2.Bxc5#
    • 1...Qf1
      • 2.Bxc5#
    • 1...Qg2
      • 2.Bxc5#
    • 1...Qh2
      • 2.Bxc5#
    • 1...Rc3
      • 2.Qa4#
    • 1...Re3
      • 2.Bxc5#
    • 1...Rf4
      • 2.Sc6#
      • 2.Qa4#
    • 1...Rf5
      • 2.Sc6#
      • 2.Qa4#
    • 1...Rf6
      • 2.Qa4#
    • 1...Sd4
      • 2.Bxc5#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sdc6#
      • 1...Rf6
        • 2.Qa4#
      • 1...Sd4
        • 2.Bxc5#
      • 1...Bxd8!
    • 1.Rxc5?
      • threat
        • 2.Qa4#
      • 1...Qxc5+
        • 2.Bxc5#
      • 1...Rxb3
        • 2.Sc6#
      • 1...Sb6
        • 2.Rc4#
      • 1...Sc3!
    • 1.Qb2?
      • threat
        • 2.Sc6#
      • 1...Rxb3
        • 2.Qxb3#
      • 1...Sd4
        • 2.Bxc5#
      • 1...Rf6!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Sc6#
      • 1...Qxc5+
        • 2.Bxc5#
      • 1...Rxb3
        • 2.Qa4#
      • 1...Rf6
        • 2.Qa4#
      • 1...Sd4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::B(J),XP(g)
    • Q(b);N_GUARD,XR(C)::B(J),XP(g)
    • R(c);::QAR1(A)
    • R(c);S_CUTQ(b)::B(J),XP(g)
    • S(a);S_CUTQ(b)::B(J),XP(g)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • R(c);::QAR1(A)
        • S(a);S_CUTQ(b)::B(J),XP(g)
      • Refutation
        • B(f);XS(I)
    • Try
      • R(F);P_SPINR(F),XP(g)
      • Threat
        • QAR1(A)
      • Vars
        • Q(b);CHECK,OGATE,P_SPINQ(b),XR(F)::B(J),XQ(b)
        • R(c);XP(B)::S(D)
        • S(i);N_PINR(F)::B(J)+R(F),DCHECK
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(B)::QAR1(A),XR(c)
        • S(a);S_CUTQ(b)::B(J),XP(g)
      • Refutation
        • R(c);
  • Actual
    • S(I);P_SPINS(I),XP(g)
    • Threat
      • S(D)
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(I)::B(J),XQ(b)
      • R(c);XP(B)::QAR1(A)
      • R(c);::QAR1(A)
      • S(a);N_PINS(I)::B(J)+S(I),DCHECK
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