MESON Chess Problem Database

Problem Display
PID: 110806 (b1r2N2/Q1p4K/N1k5/2p5/2P5/7p/6qP/3R3B w - - 0 1)

Neukomm, Gyula (Julius) R

La Strategie, 1909

b1r2N2/Q1p4K/N1k5/2p5/2P5/7p/6qP/3R3B

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Bxf3#
    • 1...Qe4+
      • 2.Bxe4#
    • 1...Rb8
      • 2.Sxb8#
      • 2.Qxc7#
    • 1...Rd8
      • 2.Qxc7#
    • 1...Re8
      • 2.Qxc7#
    • 1...Rxf8
      • 2.Qxc7#
    • 1...Bb7
      • 2.Qxc5#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Qxc5#
      • 1...Kd6
        • 2.Qxc5#
      • 1...Rxf8
        • 2.Qxc7#
      • 1...Qe4+!
    • 1.Re1?
      • threat
        • 2.Re6#
      • 1...Kd6
        • 2.Re6#
        • 2.Qxc5#
      • 1...Rxf8
        • 2.Qxc7#
      • 1...Rd8
        • 2.Qxc7#
      • 1...Re8
        • 2.Qxc7#
      • 1...Qe4+!
    • 1.Rd6+?
      • 1...Kxd6
        • 2.Qxc5#
      • 1...cxd6!
    • 1.Rd7?
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Rxf8
        • 2.Qxc7#
      • 1...Qf3
        • 2.Bxf3#
      • 1...Qd5
        • 2.Bxd5#
      • 1...Rb8
        • 2.Sxb8#
        • 2.Qxc7#
      • 1...Rd8
        • 2.Qxc7#
      • 1...Re8
        • 2.Qxc7#
      • 1...Bb7
        • 2.Qxc5#
      • 1...Qxh1!
    • 1.Rd8?
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Rxd8
        • 2.Qxc7#
      • 1...Qf3
        • 2.Bxf3#
      • 1...Qd5
        • 2.Bxd5#
      • 1...Rb8
        • 2.Sxb8#
        • 2.Qxc7#
      • 1...Bb7
        • 2.Qxc5#
      • 1...Qxh1!
  • Keys
    • 1.Rg1!
      • 1...Qe4+
        • 2.Rg6#
      • 1...Kd6
        • 2.Qxc5#
      • 1...Qxh1
        • 2.Rg6#
      • 1...Rxf8
        • 2.Qxc7#
      • 1...Qf3
        • 2.Rg6#
      • 1...Qd5
        • 2.Rg6#
      • 1...Rb8
        • 2.Qxc7#
      • 1...Rd8
        • 2.Qxc7#
      • 1...Re8
        • 2.Qxc7#
      • 1...Bb7
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(a);OGATE::B(B),XQ(a)
    • Q(a);CHECK,OGATE::B(B),XQ(a)
    • R(g);N_GUARD::QAR1(F),XP(e)
    • R(g);N_GUARD,XS(H)::QAR1(F),XP(e)
    • B(f);SBLOCK::QAR1(F),XP(c)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • K(d);N_SPINQ(a),P-FLIGHT::QAB1(F),XP(c)
        • R(g);N_GUARD,XS(H)::QAR1(F),XP(e)
      • Refutation
        • Q(a);CHECK
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • R(g);N_GUARD,XS(H)::QAR1(F),XP(e)
        • R(g);N_GUARD::QAR1(F),XP(e)
      • Refutation
        • Q(a);CHECK
    • Try
      • R(A);CHECK
      • Vars
        • K(d);N_SPINQ(a),P-FLIGHT,XR(A)::QAB1(F),XP(c)
      • Refutation
        • P(e);XR(A)
    • Try
      • R(A);
      • Vars
        • Q(a);CHECK,OGATE::B(B),XQ(a)
        • R(g);N_GUARD,XS(H)::QAR1(F),XP(e)
        • Q(a);OGATE::B(B),XQ(a)
        • R(g);N_GUARD::QAR1(F),XP(e)
        • B(f);SBLOCK::QAR1(F),XP(c)
      • Refutation
        • Q(a);N_SPINQ(a),XB(B)
    • Try
      • R(A);
      • Vars
        • Q(a);CHECK,OGATE::B(B),XQ(a)
        • R(g);N_GUARD,XR(A)::QAR1(F),XP(e)
        • Q(a);OGATE::B(B),XQ(a)
        • B(f);SBLOCK::QAR1(F),XP(c)
      • Refutation
        • Q(a);N_SPINQ(a),XB(B)
  • Actual
    • R(A);
    • Vars
      • Q(a);CHECK,OGATE::R(A)
      • K(d);N_SPINQ(a),P-FLIGHT::QAB1(F),XP(c)
      • Q(a);N_SPINQ(a),OGATE,XB(B)::R(A)
      • R(g);N_GUARD,XS(H)::QAR1(F),XP(e)
      • Q(a);OGATE::R(A)
      • R(g);N_GUARD::QAR1(F),XP(e)
      • B(f);SBLOCK::QAR1(F),XP(c)
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