MESON Chess Problem Database

Problem Display
PID: 167389 (B4R2/3PpqNb/2R5/4P1p1/3pk1p1/1p3Np1/5nQ1/bKB5 w - - 0 1)

Martone, Armando

La Settimana Enigmistica, 1932

(First published on Sat Aug 13 1932)

B4R2/3PpqNb/2R5/4P1p1/3pk1p1/1p3Np1/5nQ1/bKB5

#2

10 + 11

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5+
      • 2.Rc2#
    • 1...Qh5
      • 2.Rc3#
    • 1...Qf4
      • 2.Rc3#
    • 1...Qf5
      • 2.Rc3#
    • 1...Qxg7
      • 2.Rc3#
    • 1...Sd3
      • 2.Re6#
    • 1...d3
      • 2.Rc4#
      • 2.Re6#
    • 1...e6
      • 2.Rc3#
  • Tries
    • 1.Se1+?
      • 1...Qf3
        • 2.Rc5#
        • 2.Re6#
      • 1...Kxe5+!
    • 1.Sxg5+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Kxe5+!
    • 1.Rc2+?
      • 1...Kd3
        • 2.Se1#
        • 2.Qf1#
      • 1...Qd5!
    • 1.Rc4+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Qd5!
    • 1.Rc5+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Qd5!
    • 1.Rc7+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Qd5!
    • 1.Rcc8+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Qd5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Re6#
      • 1...Kxf3+
        • 2.Rg6#
      • 1...Kd5+
        • 2.Rc2#
      • 1...Qxf8
        • 2.Rc8#
      • 1...Qd5
        • 2.Qe2#
      • 1...Qc4
        • 2.Rxc4#
      • 1...Qe6
        • 2.Rxe6#
      • 1...Qe8
        • 2.Rc8#
      • 1...e6
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Ra6#
        • 2.Rb6#
        • 2.Rd6#
        • 2.Rxe6#
        • 2.Rc7#
        • 2.Rcc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • K(f);CHECK,S_FLIGHT::B(I)+R(F)
    • Q(j);N_GUARD::B(I)+R(F)
    • Q(j);N_GUARD,XS(H)::B(I)+R(F)
    • S(b);SBLOCK::B(I)+R(F)
    • P(i);S_CUTQ(j)::B(I)+R(F)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(f);CHECK,P-FLIGHT,XP(E)
    • Try
      • S(D);CHECK,XP(h)
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • K(f);CHECK,P-FLIGHT,XP(E)
    • Try
      • R(F);CHECK
      • Refutation
        • Q(j);P_SPINQ(j)
    • Try
      • R(F);CHECK,P_PINP(e)
      • Vars
        • K(f);N_SPINP(e),S_FLIGHT::QAB(C)
      • Refutation
        • Q(j);P_SPINQ(j)
    • Try
      • R(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • Q(j);P_SPINQ(j)
    • Try
      • R(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • Q(j);P_SPINQ(j)
    • Try
      • R(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • Q(j);P_SPINQ(j)
  • Actual
    • Q(C);
    • Threat
      • B(I)+R(F)
    • Vars
      • K(f);CHECK,P_SPINQ(j),P_SPINS(b),S_FLIGHT,XS(D)::B(I)+R(F)
      • K(f);CHECK,S_FLIGHT::B(I)+R(F)
      • Q(j);N_GUARD,XR(J)::B(I)+R(F)
      • Q(j);SBLOCK::QAR2(C)
      • Q(j);N_GUARD::B(I)+R(F),XQ(j)
      • Q(j);::B(I)+R(F),XQ(j)
      • Q(j);N_GUARD::B(I)+R(F)
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