MESON Chess Problem Database

Problem Display
PID: 245001 (8/NR2qpNb/2Pk4/BR2nr2/K1P5/P5Q1/5P2/3rb3 w - - 0 1)

Armeni, Alberto

Scacchi e Scienze Applicate, 2010

8/NR2qpNb/2Pk4/BR2nr2/K1P5/P5Q1/5P2/3rb3

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Rd7#
    • 1...Qg5
      • 2.Rd7#
    • 1...Qf6
      • 2.Rd7#
    • 1...Qf8
      • 2.Rd7#
    • 1...Qd7
      • 2.Rxd7#
    • 1...Ra1
      • 2.Rd5#
    • 1...Rb1
      • 2.Rd5#
    • 1...Rc1
      • 2.Rd5#
    • 1...Rd2
      • 2.Bb4#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Bd2
      • 2.Rd5#
    • 1...Bb4
      • 2.Bxb4#
  • Tries
    • 1.Sxf5+?
      • 1...Ke6
        • 2.Qxe5#
      • 1...Bxf5!
    • 1.Qxe5+?
      • 1...Qxe5
        • 2.Rd7#
      • 1...Rxe5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qc5#
      • 1...Bxf2
        • 2.Bb4#
      • 1...Sxc4
        • 2.Qxe7#
      • 1...Sxc6
        • 2.Sc8#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Bb4
        • 2.Bxb4#
      • 1...Sd3
        • 2.Qxe7#
      • 1...Sf3
        • 2.Qxe7#
      • 1...Sg4
        • 2.Qxe7#
      • 1...Sg6
        • 2.Sxf5#
      • 1...Sd7
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 10
  • Sets
    • Q(f);N_GUARD,P_PINP(E)::R1(J)
    • Q(f);N_GUARD::R1(J)
    • Q(f);N_GUARD::R1(J),XQ(f)
    • R(a);N_GUARD,P_PINP(B)::R1(G)
    • R(a);N_GUARD::R1(G)
    • R(a);S_CUTB(b)::B(F)
    • R(a);N_GUARD::R1(G),XR(a)
    • B(b);S_CUTR(a)::R1(G)
    • B(b);N_GUARD::B(F),XB(b)
  • Tries
    • Try
      • S(K);CHECK,XR(d)
      • Vars
        • K(e);N_SPINS(c),P-FLIGHT::QAR1(C),XS(c)
      • Refutation
        • B(h);XS(K)
    • Try
      • Q(C);CHECK,XS(c)
      • Vars
        • Q(f);XQ(C)::R1(J)
      • Refutation
        • R(d);XQ(C)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • QAB1(C)
    • Vars
      • B(b);N_GUARD,XP(A)::B(F)
      • S(c);OGATE,XP(E)::QAB1(C),XQ(f)
      • S(c);SBLOCK,XP(H)::S(I)
      • R(a);N_GUARD,P_PINP(E)::QAR2(C),XR(a)
      • R(a);N_GUARD::R1(G),XR(a)
      • B(b);N_GUARD::B(F),XB(b)
      • S(c);OGATE::QAB1(C),XQ(f)
      • S(c);S_CUTB(h)::S(K),XR(d)
      • S(c);S_CUTQ(f)::B(F)
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