MESON Chess Problem Database

Problem Display
PID: 39394 (q7/5p2/B1NRpP2/BR6/2kp4/n2r2p1/3pQbK1/1b6 w - - 0 1)

Peris Pardo, Julio

6th HM., BCF 022. Ty., 1936-1937

q7/5p2/B1NRpP2/BR6/2kp4/n2r2p1/3pQbK1/1b6

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6+
      • 2.Rxc6#
    • 1...Qa7
      • 2.Se5#
    • 1...Qb8
      • 2.Se5#
    • 1...Qc8
      • 2.Se5#
    • 1...Qd8
      • 2.Se5#
    • 1...Qe8
      • 2.Se5#
    • 1...Qf8
      • 2.Se5#
    • 1...Qg8
      • 2.Se5#
    • 1...Qh8
      • 2.Se5#
    • 1...Be1
      • 2.Rxd4#
  • Tries
    • 1.Rb4+?
      • 1...Kc5
        • 2.Qe5#
      • 1...Kc3!
    • 1.Rc5+?
      • 1...Kxc5
        • 2.Qe5#
      • 1...Kb3!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qc5#
      • 1...Qxc6+
        • 2.Rxc6#
      • 1...Sxb5
        • 2.Qxb5#
      • 1...Rb3
        • 2.Rc5#
      • 1...Rc3
        • 2.Rb4#
      • 1...Re3
        • 2.Rxd4#
      • 1...Rf3
        • 2.Se5#
      • 1...Qa7
        • 2.Se5#
      • 1...e5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(k);CHECK,OGATE,XS(F)::R(G),XQ(k)
    • Q(k);N_PINS(F)::S(F)
    • B(c);N_GUARD::R1(G),XP(h)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(g);N_SPINR(e),P-FLIGHT::QAR2(A)
      • Refutation
        • K(g);N_SPINR(e),P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(g);N_SPINR(e),P-FLIGHT,XR(D)::QAR2(A)
      • Refutation
        • K(g);N_SPINR(e),S_FLIGHT
  • Actual
    • Q(A);N_PINR(e)
    • Threat
      • QAR1(A)
    • Vars
      • Q(k);CHECK,OGATE,XS(F)::R(G),XQ(k)
      • S(d);OGATE,P_SPINS(d),XR(D)::QAB1(A),XS(d)
      • R(e);SBLOCK::B(E)+R(D),DCHECK
      • R(e);N_GUARD,S_CUTB(c)::R1(G),XP(h)
      • R(e);N_PINS(F)::S(F)
      • Q(k);N_PINS(F)::S(F)
      • P(i);OGATEB::QAB(A),XP(j)
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