MESON Chess Problem Database

Problem Display
PID: 149978 (7K/3Q4/2p1pR2/1p5B/1RbnkB2/1p4p1/1Nr1p3/3N2b1 w - - 0 1)

Calapso, Remo

Centurini Ty. (L'Italia Scacchistica), 1921

7K/3Q4/2p1pR2/1p5B/1RbnkB2/1p4p1/1Nr1p3/3N2b1

#2

8 + 11

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Bd3
      • 2.Qxe6#
    • 1...Bd5
      • 2.Qh7#
    • 1...Sf3
      • 2.Bg6#
      • 2.Qd3#
  • Tries
    • 1.Bf3+?
      • 1...Sxf3
        • 2.Qd3#
      • 1...Kxf3!
    • 1.Qd6?
      • threat
        • 2.Qe5#
      • 1...Sf3
        • 2.Bg6#
        • 2.Qd3#
      • 1...e5
        • 2.Qxe5#
      • 1...Rxb2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Bg6#
      • 1...Bxd3
        • 2.Qxe6#
      • 1...Bd5
        • 2.Qh7#
      • 1...Sf3
        • 2.Bg6#
      • 1...Sf5
        • 2.Rxe6#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(A)
    • R(b);N_GUARD::S(A),XR(b)
    • B(f);N_GUARD,P_SPINS(g)::QAR2(G),XP(k)
    • B(f);P_SPINS(g),SBLOCK::QAB(G)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • S(g);OGATE,P_SPINB(f),XB(E)::QAB1(G)
      • Refutation
        • K(h);S_FLIGHT,XB(E)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • P(k);::QAR1(G),XP(k)
      • Refutation
        • R(b);XS(B)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(h);P_SPINS(g),S_FLIGHT,XS(B)::B(E)
      • B(f);N_GUARD,P_SPINS(g),SBLOCK,XS(B)::QAR2(G),XP(k)
      • B(f);P_SPINS(g),SBLOCK::QAB(G)
      • S(g);N_GUARD,P_SPINB(f),SBLOCK::B(E)
      • S(g);N_GUARD,P_SPINB(f),SBLOCK::R(F),XP(k)
      • P(j);::S(B),XP(j)
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