MESON Chess Problem Database

Problem Display
PID: 253703 (1KR5/8/1P1B4/1N1k1P2/3br3/4n3/8/7Q w - - 0 1)

Petrasinovic, Petrasin

Sachmatija, 2021

1KR5/8/1P1B4/1N1k1P2/3br3/4n3/8/7Q

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Rc5#
    • 1...Bb2
      • 2.Rc5#
    • 1...Bc3
      • 2.Rc5#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Be5
      • 2.Rc5#
    • 1...Bf6
      • 2.Rc5#
    • 1...Bg7
      • 2.Rc5#
    • 1...Bh8
      • 2.Rc5#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qc6#
      • 1...Sxf5
        • 2.Qc4#
      • 1...Bc3
        • 2.Rc5#
      • 1...Bc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc2!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa8#
      • 1...Bxa1
        • 2.Rc5#
      • 1...Sxf5
        • 2.Qa2#
      • 1...Re7
        • 2.Qxd4#
      • 1...Bc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(b);N_GUARD::R1(G)
    • B(b);N_GUARD::R1(G),XB(b)
    • B(b);N_GUARD,P_PINB(E)::R1(G)
  • Tries
    • Try
      • Q(A);N_PINR(c)
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD,XP(C)::QAB1(A)
        • B(b);N_GUARD::R1(G)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • Q(A);N_PINR(c)
    • Threat
      • QAB(A)
    • Vars
      • B(b);N_GUARD,XQ(A)::R1(G)
      • S(a);N_GUARD,XP(C)::QAB(A)
      • R(c);N_GUARD::QAR1(A),XB(b)
      • B(b);N_GUARD::R1(G),XB(b)
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