MESON Chess Problem Database

Problem Display
PID: 219185 (Kn1N4/BPp5/3Q4/k1rq3R/P7/1BP1N3/1P6/R7 w - - 0 1)

Coello Alonso, Jose Antonio

Uris, Miguel

BCPS Website, 2020

Kn1N4/BPp5/3Q4/k1rq3R/P7/1BP1N3/1P6/R7

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sc4#
      • 2.Rxc5#
    • 1...Qg2
      • 2.Sc4#
      • 2.Rxc5#
    • 1...Qf3
      • 2.Sc4#
      • 2.Rxc5#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qe4
      • 2.Rxc5#
    • 1...Qe6
      • 2.Rxc5#
    • 1...Qxb7+
      • 2.Sxb7#
    • 1...Qf7
      • 2.Rxc5#
    • 1...Qg8
      • 2.Rxc5#
    • 1...Qd1
      • 2.Sc4#
      • 2.Rxc5#
    • 1...Qd2
      • 2.Sc4#
      • 2.Rxc5#
    • 1...Rc4
      • 2.Sxc4#
  • Tries
    • 1.Qxc7+?
      • 1...Ka6
        • 2.Qb6#
      • 1...Rxc7!
  • Keys
    • 1.Bc4!
      • threat
        • 2.b4#
      • 1...Qxb7+
        • 2.Sxb7#
      • 1...Qxc4
        • 2.Sxc4#
      • 1...Rxc4
        • 2.Sxc4#
      • 1...Rb5
        • 2.axb5#
      • 1...Sa6
        • 2.Qxa6#
      • 1...Sc6
        • 2.Qxc7#

This is a version of 141033

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD,N_PINP(J),P_SPINR(b)::S(E),XQ(c)
    • Q(c);OGATE,P_SPINR(b)::R(G),XR(b)
    • Q(c);N_PINP(J),OGATE,P_SPINR(b)::R(G),XR(b)
    • Q(c);CHECK,P_SPINR(b),XP(J)::S(L),XQ(c)
    • R(b);N_GUARD,P_SPINQ(c)::S(E),XR(b)
  • Tries
    • Try
      • Q(H);CHECK,XP(d)
      • Vars
        • K(a);P-FLIGHT::QAR1(H)
      • Refutation
        • R(b);P_SPINQ(c),XQ(H)
  • Actual
    • B(C);
    • Threat
      • P(B)
    • Vars
      • Q(c);CHECK,P_SPINR(b),XP(J)::S(L),XQ(c)
      • Q(c);N_PINP(J),P_SPINR(b),XB(C)::S(E),XQ(c)
      • R(b);P_SPINQ(c),XB(C)::S(E),XR(b)
      • R(b);OGATE::R(A)+P(F),XR(b)
      • S(e);N_GUARD::QAR1(H),XS(e)
      • S(e);N_PINP(J),S_CUTR(b)::QAB(H),XP(d)
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