MESON Chess Problem Database

Problem Display
PID: 138548 (N3Q3/R1r5/N1n5/1k6/1P1P4/1P6/8/2K3nb w - - 0 1)

Nesic, Milivoj S

NAP, 1996

N3Q3/R1r5/N1n5/1k6/1P1P4/1P6/8/2K3nb

#2

8 + 5

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Se2+
      • 2.Qxe2#
    • 1...Sf3
      • 2.Qe2#
    • 1...Sh3
      • 2.Qe2#
  • Tries
    • 1.Qh5+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Se5+!
    • 1.Qe5+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sxe5+!
    • 1.Qb8+?
      • 1...Rb7
        • 2.Qxb7#
      • 1...Sxb8+!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qc4#
      • 1...Se2+
        • 2.Qxe2#
      • 1...Sxb4+
        • 2.S6xc7#
      • 1...Sxd4+
        • 2.S8xc7#
      • 1...Sa5+
        • 2.S8xc7#
      • 1...Se5+
        • 2.S8xc7#
      • 1...Sxa7+
        • 2.S8xc7#
      • 1...Se7+
        • 2.S8xc7#
      • 1...Sb8+
        • 2.S8xc7#
      • 1...Sd8+
        • 2.S8xc7#
      • 1...Bd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • S(a);CHECK,N_GUARD::QAB(H),XS(a)
    • S(a);N_GUARD::QAB(H)
  • Tries
    • Try
      • Q(H);CHECK,N_PINS(d)
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(H),XB(b)
      • Refutation
        • S(d);CHECK,P_SPINS(d)
    • Try
      • Q(H);CHECK,N_PINS(d)
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(H),XB(b)
      • Refutation
        • S(d);CHECK,XQ(H)
    • Try
      • Q(H);CHECK,N_PINS(d)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAR2(H),XR(e)
      • Refutation
        • S(d);CHECK,XQ(H)
  • Actual
    • Q(H);N_PINS(d)
    • Threat
      • QAB1(H)
    • Vars
      • S(a);CHECK,N_GUARD::QAB(H),XS(a)
      • S(d);CHECK,SBLOCK,XP(C)::S(E),XR(e)
      • S(d);CHECK,XP(D)::S(G),XR(e)
      • S(d);CHECK::S(G),XR(e)
      • S(d);CHECK,XR(F)::S(G),XR(e)
      • B(b);N_GUARD::QAR2(H),XB(b)
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