MESON Chess Problem Database

Problem Display
PID: 270030 (8/8/4K3/1B2N3/5pR1/4k3/Np3n1B/1Q6 w - - 0 1)

Petrasinovic, Petrasin

NIN, 1998

8/8/4K3/1B2N3/5pR1/4k3/Np3n1B/1Q6

#2

7 + 4

5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Bxf4#
    • 1...f3
      • 2.Qe1#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Bxf2#
      • 1...Kd2!
    • 1.Rxf4?
      • threat
        • 2.Qe1#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se4
        • 2.Qd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Kd2!
  • Keys
    • 1.Bg3!
      • 1...Kd2
        • 2.Bxf4#
      • 1...Kd4
        • 2.Bxf2#
      • 1...Sxg4
        • 2.Qd3#
      • 1...fxg3
        • 2.Qe1#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sh1
        • 2.Qd3#
      • 1...Sh3
        • 2.Qd3#
      • 1...Se4
        • 2.Qd3#
      • 1...f3
        • 2.Qe1#

This anticipates 270033(2012)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,S_FLIGHT::B(C),XP(d)
    • P(d);::QAR2(A)
  • Tries
    • Try
      • B(C);P_PINS(b)
      • Threat
        • QAR1(A)
      • Vars
        • K(c);N_GUARD,P_SPINP(d),S_FLIGHT::B(C),XS(b)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • R(D);XP(d)
      • Threat
        • QAR2(A)
      • Vars
        • S(b);N_GUARD::QAR1(A),XS(b)
        • S(b);N_GUARD::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(c);N_GUARD,S_FLIGHT::B(C),XP(d)
      • K(c);N_GUARD,P_SPINP(d),S_FLIGHT::B(C),XS(b)
      • S(b);N_GUARD,XR(D)::QAR1(A)
      • P(d);XB(C)::QAR2(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • S(b);N_GUARD::QAR1(A)
      • P(d);::QAR2(A)
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