MESON Chess Problem Database

Problem Display
PID: 262318 (b7/2n2p2/p2r1r2/KNp1Q1p1/2k2n1q/P5p1/2B1p3/1R2B3 w - - 0 1)

Somma, Francesco

L'Echiquier de Paris, 1934

b7/2n2p2/p2r1r2/KNp1Q1p1/2k2n1q/P5p1/2B1p3/1R2B3

#2

7 + 13

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qc3#
    • 1...Rc6
      • 2.Qe4#
    • 1...Rf5
      • 2.Sxd6#
    • 1...Bd5
      • 2.Qc3#
    • 1...Sd3
      • 2.Bb3#
    • 1...Sfd5
      • 2.Qxe2#
    • 1...Sfe6
      • 2.Sxd6#
    • 1...Scd5
      • 2.Qe4#
    • 1...Sce6
      • 2.Sxd6#
  • Tries
    • 1.Qxe2+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Rd3
        • 2.Bb3#
      • 1...Sd3
        • 2.Bb3#
      • 1...Sxe2!
    • 1.Qe3?
      • threat
        • 2.Bb3#
        • 2.Qb3#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sxb5
        • 2.Bb3#
      • 1...axb5
        • 2.Bb3#
      • 1...Sd3
        • 2.Bb3#
      • 1...Rd3!
    • 1.Qe4+?
      • 1...Rd4
        • 2.Bb3#
      • 1...Bxe4!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qxc5#
      • 1...cxb4
        • 2.Rxb4#
      • 1...Rd5
        • 2.Qc3#
      • 1...Rc6
        • 2.Qe4#
      • 1...Rf5
        • 2.Sxd6#
      • 1...Bd5
        • 2.Qc3#
      • 1...Sd3
        • 2.Bb3#
      • 1...Sfd5
        • 2.Qxe2#
      • 1...Sfe6
        • 2.Sxd6#
      • 1...Scd5
        • 2.Qe4#
      • 1...Sce6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(i);SBLOCK::QAR1(G)
    • R(i);N_GUARD,S_CUTB(m)::QAR2(G)
    • R(j);N_GUARD::S(F),XR(i)
    • B(m);SBLOCK::QAR1(G)
    • S(d);SBLOCK::B(C)
    • S(d);N_GUARD,SBLOCK,S_CUTR(i)::QAB(G),XP(a)
    • S(d);S_CUTR(j)::S(F),XR(i)
    • S(k);S_CUTB(m),S_CUTR(i)::QAR2(G)
    • S(k);S_CUTR(j)::S(F),XR(i)
  • Tries
    • Try
      • Q(G);CHECK,XP(a)
      • Vars
        • K(c);S_CUTB(m),S_CUTR(i),S_FLIGHT::QAB1(G)
        • R(i);P_SPINR(i)::B(C)
        • S(d);P_SPINS(d)::B(C)
      • Refutation
        • S(d);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);S_CUTB(m),S_CUTR(i),S_FLIGHT::QAB1(G)
        • S(k);XS(F)::B(C)
        • P(h);XS(F)::B(C)
        • S(d);::B(C)
      • Refutation
        • R(i);
    • Try
      • Q(G);CHECK
      • Vars
        • R(i);P_SPINR(i)::B(C)
      • Refutation
        • B(m);XQ(G)
  • Actual
    • B(B);
    • Threat
      • QAR1(G),XP(f)
    • Vars
      • P(f);OGATE,XB(B)::R1(A),XP(f)
      • R(i);SBLOCK::QAR1(G)
      • R(i);N_GUARD,S_CUTB(m)::QAR2(G)
      • R(j);N_GUARD::S(F),XR(i)
      • B(m);SBLOCK::QAR1(G)
      • S(d);SBLOCK::B(C)
      • S(d);N_GUARD,SBLOCK,S_CUTR(i)::QAB(G),XP(a)
      • S(d);S_CUTR(j)::S(F),XR(i)
      • S(k);S_CUTB(m),S_CUTR(i)::QAR2(G)
      • S(k);S_CUTR(j)::S(F),XR(i)
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