MESON Chess Problem Database

Problem Display
PID: 120685 (8/5p2/B4K2/1r2P3/pNk1p3/P3P3/1Q6/3b4 w - - 0 1)

Neukomm, Gyula (Julius) R

2nd HM., Bahamane, 1951

8/5p2/B4K2/1r2P3/pNk1p3/P3P3/1Q6/3b4

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd4#
    • 1...Bc2
      • 2.Qxc2#
    • 1...Be2
      • 2.Qc2#
    • 1...Bb3
      • 2.Qd4#
    • 1...Bf3
      • 2.Qc2#
    • 1...Bg4
      • 2.Qc2#
    • 1...Bh5
      • 2.Qc2#
  • Tries
    • 1.Kxf7?
      • 1...Kc5
        • 2.Qd4#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bb3
        • 2.Qd4#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5+!
    • 1.Sa2?
      • threat
        • 2.Qxb5#
      • 1...Kc5
        • 2.Qxb5#
      • 1...Kd5
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qd4#
      • 1...Kd3!
    • 1.Qc1+?
      • 1...Bc2
        • 2.Qxc2#
      • 1...Kb3!
    • 1.Qd2?
      • 1...Kc5
        • 2.Qd4#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bb3
        • 2.Qd4#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5
        • 2.Qc2#
      • 1...Kb3!
    • 1.e6?
      • 1...Kc5
        • 2.Qd4#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Be2
        • 2.Qc2#
      • 1...Bb3
        • 2.Qd4#
      • 1...Bf3
        • 2.Qc2#
      • 1...Bg4
        • 2.Qc2#
      • 1...Bh5
        • 2.Qc2#
      • 1...fxe6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qxb5#
      • 1...Kd3
        • 2.Bxb5#
      • 1...Kc5
        • 2.Qxb5#
      • 1...Kxd5
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(c);N_SPINR(e),P-FLIGHT::QAB1(A)
    • B(a);N_GUARD::QAR2(A),XB(a)
    • B(a);N_GUARD::QAR2(A)
    • B(a);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(G);P-FLIGHT,XP(f)
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT::QAB1(A)
        • B(a);N_GUARD::QAR2(A),XB(a)
        • B(a);N_GUARD::QAR2(A)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • B(a);CHECK
    • Try
      • S(D);
      • Threat
        • QAB1(A),XR(e)
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT::QAR1(A),XR(e)
        • K(c);N_SPINR(e),S_FLIGHT::QAR2(A),XR(e)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(A),XB(a)
      • Refutation
        • K(c);N_SPINR(e),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT::QAB1(A)
        • B(a);N_GUARD::QAR2(A),XB(a)
        • B(a);N_GUARD::QAR2(A)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • K(c);N_SPINR(e),S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT::QAB1(A)
        • B(a);N_GUARD::QAR2(A),XB(a)
        • B(a);N_GUARD::QAR2(A)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • P(f);XP(E)
  • Actual
    • S(D);
    • Threat
      • QAB1(A),XR(e)
    • Vars
      • K(c);S_FLIGHT::B(F),XR(e)
      • K(c);N_SPINR(e),P-FLIGHT::QAR1(A),XR(e)
      • K(c);N_SPINR(e),S_FLIGHT,XS(D)::QAR2(A),XR(e)
      • B(a);SBLOCK::QAR1(A)
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