MESON Chess Problem Database

Problem Display
PID: 179184 (8/4p3/2bR4/2kNP3/2pN4/8/K3B3/3Q4 w - - 0 1)

Popa, Nicolae

Phenix, 2013

8/4p3/2bR4/2kNP3/2pN4/8/K3B3/3Q4

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Se6#
    • 1...c3
      • 2.Sb3#
      • 2.Se6#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qxc4#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bb5
        • 2.Sb3#
        • 2.Se6#
      • 1...c3
        • 2.Sb3#
        • 2.Se6#
        • 2.Qxc3#
      • 1...Bxd5!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Se6#
        • 2.Qxc4#
        • 2.Qb6#
      • 1...cxb3+
        • 2.Sxb3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bxd5
        • 2.Qb6#
      • 1...exd6
        • 2.Qxc4#
      • 1...Bb5
        • 2.Se6#
      • 1...Bd7
        • 2.Qxc4#
        • 2.Qb6#
      • 1...c3
        • 2.Se6#
        • 2.Qc4#
        • 2.Qxc3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...e6
        • 2.Sxe6#
        • 2.Qxc4#
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::S(D)
  • Tries
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • B(c);XS(E)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • P(a);CHECK,XQ(A)::S(D),XP(a)
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • B(c);XS(E)::QAB1(A)
      • P(d);XR(G)::QAR1(A),XP(a)
      • B(c);::S(D)
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