MESON Chess Problem Database

Problem Display
PID: 202354 (1B2N1N1/4r1pK/q3k1P1/pp2n3/2PRp3/4r2b/B3P1R1/5Q2 w - - 0 1)

Moschini, Mario

L'Italia Scacchistica, 1923

1B2N1N1/4r1pK/q3k1P1/pp2n3/2PRp3/4r2b/B3P1R1/5Q2

#2

11 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Rd6#
    • 1...Qc8
      • 2.Rd6#
    • 1...Qd6
      • 2.Rxd6#
    • 1...Qa7
      • 2.Rd6#
    • 1...Qa8
      • 2.Rd6#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Sd3
      • 2.cxb5#
      • 2.c5#
    • 1...Sxg6
      • 2.Rxg6#
    • 1...Sf7
      • 2.Sxg7#
  • Tries
    • 1.Qf7+?
      • 1...Sxf7
        • 2.Sxg7#
      • 1...Rxf7!
    • 1.cxb5+?
      • 1...Sc4
        • 2.Bxc4#
      • 1...Rb3!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Rxe5#
      • 1...Sxc4
        • 2.Re5#
      • 1...Sxg6
        • 2.Rxg6#
      • 1...Qd6
        • 2.Rxd6#
      • 1...Rc7
        • 2.Sxc7#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sd3
        • 2.cxb5#
        • 2.c5#
      • 1...Sf3
        • 2.Qxh3#
      • 1...Sg4
        • 2.Qf5#
      • 1...Sc6
        • 2.Rd6#
      • 1...Sd7
        • 2.Sc7#
      • 1...Sf7
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_GUARD::R1(F)
    • Q(g);N_GUARD::R1(F),XQ(g)
    • R(i);N_GUARD::S(J),XR(i)
    • S(f);OGATE,XP(G)::R(D),XS(f)
    • S(f);S_CUTR(i)::S(J),XP(j)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);XQ(A)::S(J),XP(j)
      • Refutation
        • R(i);XQ(A)
    • Try
      • P(E);CHECK,XP(e)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(B),XS(f)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • R(D);
    • Threat
      • R1(D),XS(f)
    • Vars
      • S(f);P_SPINS(f),XP(E)::R1(D)
      • S(f);OGATE,XP(G)::R(D),XS(f)
      • Q(g);N_GUARD::R1(F),XQ(g)
      • R(i);N_GUARD::S(J),XR(i)
      • B(b);N_GUARD,P_PINP(G)::QAB1(A),XB(b)
      • S(f);N_GUARD,S_CUTR(a)::QAB(A),XB(b)
      • S(f);S_CUTB(b)::QAB1(A)
      • S(f);S_CUTQ(g)::R1(F)
      • S(f);S_CUTR(i)::S(J)
      • S(f);S_CUTR(i)::S(J),XP(j)
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