MESON Chess Problem Database

Problem Display
PID: 274205 (8/bp1K2p1/R1p1P3/n1Nk4/1Q1P1P2/1P3P2/B2q4/3R4 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2024

8/bp1K2p1/R1p1P3/n1Nk4/1Q1P1P2/1P3P2/B2q4/3R4

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Bxc5
      • 2.Qxc5#
    • 1...Sxb3
      • 2.Bxb3#
    • 1...Sc4
      • 2.Qxc4#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Qd6#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Sxb3
        • 2.Bxb3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bb8
        • 2.Sb6#
        • 2.Qc5#
      • 1...c5
        • 2.Rd6#
      • 1...Qxb4!
    • 1.Se4?
      • threat
        • 2.Qd6#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Sxb3
        • 2.Bxb3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bb8
        • 2.Qc5#
      • 1...c5
        • 2.Rd6#
      • 1...Qxb4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qd6#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Qxf4
        • 2.Sxf4#
      • 1...Sxb3
        • 2.Bxb3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bb8
        • 2.Qc5#
      • 1...c5
        • 2.Rd6#

This is a version of 274204

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE,XS(H)::QAR1(E),XB(e)
    • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
    • S(b);N_GUARD::QAB1(E),XS(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR1(E)
      • Vars
        • Q(a);N_GUARD,XP(G)::S(H)
        • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
        • S(b);N_GUARD::QAB1(E),XS(b)
        • B(e);N_GUARD::QAR1(E),XB(e)
        • P(d);OGATE::R1(I)
      • Refutation
        • Q(a);XQ(E)
    • Try
      • S(H);
      • Threat
        • QAR1(E)
      • Vars
        • Q(a);N_GUARD,XP(G)::S(H)
        • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
        • S(b);N_GUARD::QAB1(E),XS(b)
        • B(e);N_GUARD::QAR1(E),XB(e)
        • B(e);N_GUARD::QAR1(E)
        • P(d);OGATE::R1(I)
      • Refutation
        • Q(a);XQ(E)
  • Actual
    • S(H);
    • Threat
      • QAR1(E)
    • Vars
      • Q(a);XQ(E)::S(H),XQ(a)
      • Q(a);XP(G)::S(H),XQ(a)
      • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
      • S(b);N_GUARD::QAB1(E),XS(b)
      • B(e);N_GUARD::QAR1(E),XB(e)
      • B(e);N_GUARD::QAR1(E)
      • P(d);OGATE::R1(I)
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