MESON Chess Problem Database

Problem Display
PID: 259535 (1N4nK/1r4n1/pbP5/r3kPQp/qp2P2R/1pP5/2b2P2/2NR4 w - - 0 1)

Somma, Francesco

Western Morning News, 1924

(First published on Sat Nov 15 1924)

1N4nK/1r4n1/pbP5/r3kPQp/qp2P2R/1pP5/2b2P2/2NR4

#2

11 + 12

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.Sxc6#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Bxe4
      • 2.f4#
    • 1...Bc5
      • 2.Rd5#
    • 1...Bc7
      • 2.Sd7#
    • 1...Sxf5
      • 2.Qxf5#
    • 1...Sf6
      • 2.Qf4#
      • 2.Qg3#
    • 1...Se7
      • 2.Qxg7#
  • Tries
    • 1.Qxg7+?
      • 1...Sf6
        • 2.Qg3#
      • 1...Rxg7!
    • 1.f6+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Ke6!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qd6#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Bxd1
        • 2.Sd3#
      • 1...Bxe4
        • 2.f4#
      • 1...Sxf5
        • 2.Qxf5#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Bd4
        • 2.cxd4#
      • 1...Bc5
        • 2.Rd5#
      • 1...Bc7
        • 2.Sd7#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
      • 1...Sf6
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(c);XP(I)::S(J),XQ(c)
    • R(e);N_GUARD::R1(B),XR(e)
    • R(j);N_GUARD::S(J),XR(j)
    • B(a);SBLOCK,XP(E)::P(C)
    • B(i);S_CUTR(e)::R1(B)
    • B(i);S_CUTR(j)::S(J)
    • S(k);OGATE,P_SPINS(k),XP(G)::QAR1(H),XS(k)
    • S(l);N_GUARD,S_CUTR(j)::QAB(H),XS(k)
  • Tries
    • Try
      • Q(H);CHECK,XS(k)
      • Vars
        • S(l);P_SPINS(l),SBLOCK::QAB(H)
      • Refutation
        • R(j);XQ(H)
    • Try
      • P(G);CHECK
      • Vars
        • S(k);N_GUARD,P_SPINS(k)::QAR1(H),XS(k)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • Q(c);XP(I)::S(J),XQ(c)
      • B(a);N_GUARD,XR(B)::S(A)
      • B(a);SBLOCK,XP(E)::P(C)
      • S(k);OGATE,XP(G)::QAR1(H),XS(k)
      • R(e);N_GUARD::R1(B),XR(e)
      • R(j);N_GUARD::S(J),XR(j)
      • B(a);N_GUARD::S(A),XB(a)
      • B(i);OGATE::P(D),XB(i)
      • B(i);S_CUTR(e)::R1(B)
      • B(i);S_CUTR(j)::S(J)
      • S(k);N_GUARD::QAR1(H),XS(k)
      • S(k);N_GUARD::QAR1(H)
      • S(l);SBLOCK::QAB(H)
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