MESON Chess Problem Database

Problem Display
PID: 150425 (q3b1rQ/n1N3r1/pp6/1p1R4/8/P1k3B1/B2R2KP/5N2 w - - 0 1)

Pirrone, Santi

Source?, 0000

q3b1rQ/n1N3r1/pp6/1p1R4/8/P1k3B1/B2R2KP/5N2

#2

10 + 9

114 Springaren 1965

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.Sxd5#
    • 1...Qb8
      • 2.R5d3#
    • 1...Qc8
      • 2.R5d3#
    • 1...Bg6
      • 2.Be5#
    • 1...Sc6
      • 2.R5d3#
  • Tries
    • 1.Kg1?
      • threat
        • 2.R5d3#
      • 1...Qxd5
        • 2.Sxd5#
      • 1...Bg6
        • 2.Be5#
      • 1...Qd8!
    • 1.Kf2?
      • threat
        • 2.Be5#
        • 2.R5d3#
      • 1...Qxd5
        • 2.Sxd5#
      • 1...Qd8
        • 2.Be5#
      • 1...Bg6
        • 2.Be5#
      • 1...Sc6
        • 2.R5d3#
      • 1...Rf8+!
    • 1.Se3?
      • threat
        • 2.Sd1#
        • 2.Rc2#
      • 1...Bh5
        • 2.Rc2#
      • 1...Bg6
        • 2.Sd1#
        • 2.Be5#
      • 1...Qxd5+!
    • 1.Sxa8?
      • threat
        • 2.R5d3#
      • 1...Bg6
        • 2.Be5#
      • 1...Bc6!
  • Keys
    • 1.Kh1!
      • threat
        • 2.Be5#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Sc6
        • 2.R5d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(g);CHECK,XR(H)::S(I),XQ(g)
    • Q(g);N_PINR(H)::R1(H)
    • B(h);N_PINB(G)::B(G)
    • S(e);N_PINR(H)::R1(H)
  • Tries
    • Try
      • K(D);N_SPINR(H),P-FLIGHT
      • Threat
        • R1(H)
      • Vars
        • Q(g);XR(H)::S(I),XQ(g)
        • B(h);N_PINB(G)::B(G)
      • Refutation
        • Q(g);
    • Try
      • K(D);N_SPINB(G),N_SPINR(H),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XR(H)::S(I),XQ(g)
        • Q(g);::B(G)
        • B(h);::B(G)
        • S(e);::R1(H)
      • Refutation
        • R(i);CHECK
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);::R1(C)
      • Refutation
        • Q(g);CHECK,XR(H)
    • Try
      • S(I);N_SPINR(H),XQ(g)
      • Threat
        • R1(H)
      • Vars
        • B(h);N_PINB(G)::B(G)
      • Refutation
        • B(h);P_PINR(H)
  • Actual
    • K(D);N_SPINB(G),S_FLIGHT
    • Threat
      • B(G)
    • Vars
      • Q(g);CHECK,XR(H)::S(I),XQ(g)
      • S(e);N_PINR(H)::R1(H)
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