MESON Chess Problem Database

Problem Display
PID: 96315 (2K5/Q1p1b1n1/2p2R2/4k1P1/4P3/2rB1PN1/1n3r2/B1NR4 w - - 0 1)

Caliani, Alfonso

Problem (Zagreb), 1954

2K5/Q1p1b1n1/2p2R2/4k1P1/4P3/2rB1PN1/1n3r2/B1NR4

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rfc2
      • 2.f4#
    • 1...Rd2
      • 2.f4#
    • 1...Re2
      • 2.f4#
    • 1...Rg2
      • 2.f4#
    • 1...Rh2
      • 2.f4#
    • 1...Rxd3
      • 2.Sxd3#
    • 1...Sxd3
      • 2.Sxd3#
      • 2.Bxc3#
    • 1...Sc4
      • 2.Bxc3#
  • Tries
    • 1.Qxc7+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Kd4!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qd4#
      • 1...Rxc4
        • 2.Sd3#
      • 1...Bxf6
        • 2.Qxc7#
      • 1...Sxd1
        • 2.Sd3#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Rd2
        • 2.f4#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sd3
        • 2.Sxd3#
        • 2.Bxc3#
      • 1...Se6
        • 2.Rf5#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::P(E)
    • R(c);P_SPINS(a),XB(D)::S(B),XR(c)
    • S(a);OGATE,P_SPINR(c)::B(A),XR(c)
  • Tries
    • Try
      • Q(J);CHECK,XP(f)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAB1(J),XB(g)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAB1(J)
    • Vars
      • R(c);N_GUARD,P_SPINS(a),XB(D)::S(B)
      • B(g);N_GUARD,XR(I)::QAB(J),XP(f)
      • S(a);N_GUARD,P_SPINR(c),XR(C)::S(B)
      • S(h);N_GUARD::R1(I),XS(h)
      • R(b);N_GUARD::P(E)
      • R(c);N_GUARD,P_SPINS(a)::S(B),XR(c)
      • B(g);N_GUARD::QAR2(J),XB(g)
      • S(h);N_GUARD::R1(I)
      • P(e);N_GUARD::R1(C)
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