MESON Chess Problem Database

Problem Display
PID: 121852 (K1N1R3/b7/3P4/1Qpk4/1nR3p1/5r2/6Bp/8 w - - 0 1)

Memmedov, I

Republika, 1992

K1N1R3/b7/3P4/1Qpk4/1nR3p1/5r2/6Bp/8

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Qxc5#
    • 1...g3
      • 2.Bxf3#
  • Tries
    • 1.Sb6+?
      • 1...Kxd6
        • 2.Qd7#
        • 2.Qxc5#
      • 1...Bxb6!
    • 1.Rxc5+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Bxc5!
    • 1.Ree4?
      • threat
        • 2.Rcd4#
      • 1...Rd3
        • 2.Re3#
      • 1...Sc2
        • 2.Qb7#
      • 1...Sc6!
    • 1.Qb7+?
      • 1...Sc6
        • 2.Qf7#
      • 1...Kxc4!
  • Keys
    • 1.Rce4!
      • threat
        • 2.R8e5#
      • 1...Rf5
        • 2.Rf4#
      • 1...Sd3
        • 2.Qb7#
      • 1...Sc6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::QAR1(C),XP(e)
    • P(d);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • B(g);XS(F)
    • Try
      • R(B);CHECK,XP(e)
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT::QAR1(C)
      • Refutation
        • B(g);P_SPINB(g),XR(B)
    • Try
      • R(G);N_PINR(b)
      • Threat
        • R1(B)
      • Vars
        • R(b);OGATEB::B(A)+R(G)
        • S(c);N_GUARD::QAB(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);CHECK,N_PINP(e)
      • Vars
        • S(c);P_SPINS(c),SBLOCK::QAB(C)
      • Refutation
        • K(f);N_SPINR(b),S_FLIGHT,XR(B)
  • Actual
    • R(B);N_PINR(b)
    • Threat
      • R1(G)
    • Vars
      • R(b);OGATEB::B(A)+R(B)
      • S(c);N_GUARD::QAB(C)
      • S(c);SBLOCK::QAB1(C)
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