MESON Chess Problem Database

Problem Display
PID: 149221 (KB2R3/PN4Nq/3np3/1pR2b2/1p1k4/1Q1B2P1/5P2/4r3 w - - 0 1)

Placanico, Pietro L

Best Problems, 2011

KB2R3/PN4Nq/3np3/1pR2b2/1p1k4/1Q1B2P1/5P2/4r3

#2

11 + 8

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sxe6#
    • 1...Se4
      • 2.Be5#
    • 1...e5
      • 2.Rd5#
      • 2.Qd5#
  • Tries
    • 1.Sxe6+?
      • 1...Rxe6
        • 2.Rd5#
        • 2.Qd5#
      • 1...Bxe6!
    • 1.Qxb4+?
      • 1...Sc4
        • 2.Rd8#
      • 1...Kxd3!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd5#
      • 1...Rxe4
        • 2.Qd1#
      • 1...Bxe4
        • 2.Sxe6#
      • 1...Sxe4
        • 2.Be5#
      • 1...Sxb7
        • 2.Qxb4#
      • 1...Rd1
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD,P_PINS(G),S_CUTR(a)::S(H),XP(g)
    • S(f);OGATE::B(J)
  • Tries
    • Try
      • S(H);CHECK,XP(g)
      • Refutation
        • B(e);XS(H)
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • S(f);P_SPINS(f)::R(K)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(g),XB(C)::QAB1(B)
      • R(a);N_GUARD,SBLOCK,XB(C)::QAR(B)
      • B(e);N_GUARD,P_PINS(G),SBLOCK,XB(C)::S(H),XP(g)
      • S(f);OGATE,SBLOCK,XB(C)::B(J)
      • S(f);N_GUARD,XS(G)::QAR2(B),XP(b)
      • R(a);N_GUARD::QAB1(B)
      • R(a);N_GUARD::QAB1(B),XR(a)
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