MESON Chess Problem Database

Problem Display
PID: 262737 (3NQ3/1pp1PK2/1B1kpR2/2rPr3/3q1P2/3R4/8/8 w - - 0 1)

Burashevin, Vladislav

5th HM., SuperProblem, 2018

3NQ3/1pp1PK2/1B1kpR2/2rPr3/3q1P2/3R4/8/8

#2

9 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sxb7#
    • 1...Qg1
      • 2.Sxb7#
    • 1...Qb2
      • 2.Sxb7#
    • 1...Qf2
      • 2.Sxb7#
    • 1...Qc3
      • 2.Sxb7#
    • 1...Qe3
      • 2.Sxb7#
    • 1...Qa4
      • 2.Sxb7#
    • 1...Qb4
      • 2.Sxb7#
    • 1...Qc4
      • 2.Sxb7#
    • 1...Qe4
      • 2.Sxb7#
    • 1...Qxf4
      • 2.Sxb7#
    • 1...Qxd5
      • 2.Sxb7#
    • 1...Rcxd5
      • 2.Sxb7#
    • 1...Rexd5
      • 2.Sxb7#
      • 2.Rxe6#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qd8#
      • 1...Kxd5
        • 2.Rxd4#
      • 1...Qxd5
        • 2.fxe5#
      • 1...Rexd5
        • 2.Rxe6#
      • 1...Rcxd5!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Qd8#
      • 1...Kxd5
        • 2.Rxd4#
      • 1...Qxd5
        • 2.Bxc5#
      • 1...Rcxd5
        • 2.Bxc7#
      • 1...Rexd5
        • 2.Sxd4#
      • 1...Qa4
        • 2.Bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(a);::S(H),XP(f)
    • Q(a);P_PINR(E),XP(B)::S(H),XP(f)
    • Q(a);P_SPINQ(a),XP(C)::S(H),XP(f)
    • R(b);SBLOCK,XP(C)::S(H),XP(f)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR2(I)
      • Vars
        • K(d);N_SPINP(e),OGATEB,P-FLIGHT,P_SPINQ(a),XP(C)::R1(A),XQ(a)
        • Q(a);N_GUARD,P_SPINQ(a),XP(C)::P(B),XR(c)
        • R(c);N_GUARD,SBLOCK,XP(C)::R1(E),XP(e)
      • Refutation
        • R(b);XP(C)
  • Actual
    • S(H);XP(e)
    • Threat
      • QAR2(I)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINQ(a),XP(C)::R1(A),XQ(a)
      • Q(a);N_GUARD,P_PINS(H),P_SPINQ(a),XP(C)::B(D),XR(b)
      • R(b);N_GUARD,SBLOCK,XP(C)::B(D),XP(g)
      • R(c);N_GUARD,SBLOCK,XP(C)::R(E)+S(H),XQ(a)
      • Q(a);N_GUARD::B(D),XR(b)
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