MESON Chess Problem Database

Problem Display
PID: 199774 (1N5b/3N4/K5p1/2Bk4/1P2r1P1/5Q2/8/5R2 w - - 0 1)

Nemcek, Milan

Sachova skladba, 1987

1N5b/3N4/K5p1/2Bk4/1P2r1P1/5Q2/8/5R2

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
    • 1...Ke6
      • 2.Qf7#
    • 1...Bd4
      • 2.Qb3#
    • 1...Be5
      • 2.Qf7#
  • Tries
    • 1.Rd1+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Qd3#
      • 1...Bd4
        • 2.Qb3#
      • 1...Ke6!
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Bd4
        • 2.Qb3#
      • 1...Rd4!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke6
        • 2.Qb3#
      • 1...Bd4
        • 2.Qb3#
      • 1...Be5
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINR(a),S_FLIGHT::S(G)
    • K(b);N_SPINR(a),S_FLIGHT::QAB1(B)
    • B(d);::QAB(B)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • B(d);P_SPINB(d)::QAB(B)
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT
    • Try
      • Q(B);CHECK,N_PINR(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
        • B(d);P_SPINB(d),S_CUTR(a)::QAB(B)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • R(A);
    • Threat
      • QAB1(B),XR(a)
    • Vars
      • K(b);N_SPINR(a),S_FLIGHT::S(G)
      • K(b);S_FLIGHT::QAB(B)
      • B(d);::QAB(B)
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