MESON Chess Problem Database

Problem Display
PID: 102845 (8/3n1K2/1Nr1Pp1Q/2p1k3/bNR1p1P1/B7/1b2R3/4r1q1 w - - 0 1)

Gutman, Daniel

Chess Life, 1990

8/3n1K2/1Nr1Pp1Q/2p1k3/bNR1p1P1/B7/1b2R3/4r1q1

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qxh2#
    • 1...Qd4
      • 2.Qh2#
    • 1...Rd6
      • 2.Rcxe4#
    • 1...e3
      • 2.Qf4#
  • Tries
    • 1.Bxb2+?
      • 1...Qd4
        • 2.Qh2#
      • 1...Kd6!
    • 1.Qh2+?
      • 1...Qg3
        • 2.Qxg3#
      • 1...Qxh2!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rd5#
      • 1...Kxd4
        • 2.Bxb2#
      • 1...Qxd4
        • 2.Qh2#
      • 1...Bxd4
        • 2.Sc4#
      • 1...Sxb6
        • 2.Qxf6#
      • 1...cxd4
        • 2.Sd3#
      • 1...Rd1
        • 2.Rexe4#
      • 1...Rd6
        • 2.Rdxe4#
      • 1...Bb3
        • 2.Sxc6#
      • 1...e3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD::QAB(H),XQ(b)
    • Q(b);N_GUARD::QAB(H)
    • R(h);SBLOCK::R1(D),XP(e)
    • P(e);::QAB1(H)
  • Tries
    • Try
      • B(B);CHECK,XB(c)
      • Vars
        • Q(b);P_SPINQ(b)::QAB(H)
      • Refutation
        • K(g);N_SPINP(e),S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB(H),XQ(b)
      • Refutation
        • Q(b);XQ(H)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(g);N_SPINP(e),OGATEB,S_FLIGHT,XR(D)::B(B),XB(c)
      • Q(b);N_GUARD,SBLOCK,XR(D)::QAB(H)
      • B(c);SBLOCK,XR(D)::S(F)
      • S(j);N_GUARD,XS(F)::QAB1(H),XP(i)
      • P(f);SBLOCK,XR(D)::S(C)
      • R(a);N_GUARD::R1(A),XP(e)
      • R(h);SBLOCK::R1(D),XP(e)
      • B(d);N_GUARD,P_PINP(G)::S(C),XR(h)
      • P(e);::QAB1(H)
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