MESON Chess Problem Database

Problem Display
PID: 104497 (8/8/5Q2/r4p1p/5k2/3B3K/2NRP3/1qB5 w - - 0 1)

Nesic, Milivoj S

Moldavska SSR JT, 1983

8/8/5Q2/r4p1p/5k2/3B3K/2NRP3/1qB5

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Rd1#
    • 1...Qxc2
      • 2.Rxc2#
    • 1...Qb3
      • 2.Rd1#
    • 1...Qb5
      • 2.Rd1#
    • 1...Qb7
      • 2.Rd1#
    • 1...Qb8
      • 2.Rd1#
    • 1...Ra1
      • 2.Qxf5#
    • 1...Ra2
      • 2.Qxf5#
    • 1...Ra3
      • 2.Qxf5#
    • 1...Ra4
      • 2.Qxf5#
    • 1...Re5
      • 2.Qh4#
      • 2.Qh6#
    • 1...Ra6
      • 2.Qxf5#
    • 1...Ra7
      • 2.Qxf5#
    • 1...Ra8
      • 2.Qxf5#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qe3#
      • 1...Qxc2
        • 2.Rxc2#
      • 1...Re5
        • 2.Qh4#
      • 1...Qb6!
    • 1.Qd6+?
      • 1...Re5
        • 2.Qh6#
      • 1...Kg5!
  • Keys
    • 1.Bxf5!
      • threat
        • 2.Rd4#
      • 1...Qb3+
        • 2.Rd3#
      • 1...Ra3+
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::B(A)+R(C)
    • Q(a);OGATE,XS(B)::B(A)+R(C),XQ(a)
    • Q(a);N_GUARD,P_PINB(E)::B(A)+R(C)
    • R(c);N_GUARD::QAR1(G),XP(d)
    • R(c);N_GUARD,P_PINB(E)::QAR1(G),XP(d)
  • Tries
    • Try
      • Q(G);N_PINP(d)
      • Threat
        • QAB1(G)
      • Vars
        • Q(a);OGATE,XS(B)::B(A)+R(C),XQ(a)
        • R(c);SBLOCK::QAR2(G)
      • Refutation
        • Q(a);
    • Try
      • Q(G);CHECK,N_PINP(d)
      • Vars
        • R(c);P_SPINR(c),SBLOCK::QAB(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(E);XP(d)
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • Q(a);CHECK,N_GUARD::B(A)+R(C)
      • R(c);CHECK,N_GUARD::QAR(G)+B(E)
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