MESON Chess Problem Database

Problem Display
PID: 238908 (7Q/4N3/B2Np3/4P3/1P1k1BK1/r3p1p1/1P2n3/2r1R3 w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 1958

7Q/4N3/B2Np3/4P3/1P1k1BK1/r3p1p1/1P2n3/2r1R3

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bxe3#
  • Tries
    • 1.Rd1+?
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rxd1!
    • 1.Qh1?
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Sc6#
      • 1...g2!
    • 1.Qa8?
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Qa7#
      • 1...Rc6!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);S_CUTR(c)::B(D),XP(d)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::R1(A),XR(c)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • S(b);S_CUTR(a)::S(I)
      • Refutation
        • P(e);
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • S(b);S_CUTR(a)::QAB(J)
      • Refutation
        • R(a);
  • Actual
    • Q(J);
    • Threat
      • QAR1(J)
    • Vars
      • S(b);S_CUTR(c)::QAR1(J)
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