MESON Chess Problem Database

Problem Display
PID: 99211 (1b2Q3/1bp1PB2/nP6/np1p4/1pk5/1p6/1K6/3R2B1 w - - 0 1)

Keller, Jozsefne

Magyar Sakkelet, 1955

1b2Q3/1bp1PB2/nP6/np1p4/1pk5/1p6/1K6/3R2B1

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc8
      • 2.Bxd5#
    • 1...Sc6
      • 2.Bxd5#
    • 1...Sc5
      • 2.Rd4#
  • Tries
    • 1.Bh5?
      • threat
        • 2.Be2#
      • 1...Sc5
        • 2.Rd4#
      • 1...d4!
    • 1.Bg6?
      • threat
        • 2.Bd3#
        • 2.Rc1#
      • 1...Sc5
        • 2.Rc1#
        • 2.Rd4#
      • 1...d4!
    • 1.Qc6+?
      • 1...Sxc6
        • 2.Bxd5#
      • 1...Sc5
        • 2.Bxd5#
        • 2.Rd4#
        • 2.Qxc5#
      • 1...Bxc6!
    • 1.Qh8?
      • threat
        • 2.Qd4#
        • 2.Qh4#
      • 1...cxb6
        • 2.Qd4#
      • 1...Bc8
        • 2.Bxd5#
        • 2.Qd4#
      • 1...Sc6
        • 2.Bxd5#
      • 1...Sc5
        • 2.Rd4#
        • 2.Qd4#
      • 1...c6
        • 2.Qd4#
      • 1...c5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qg4#
      • 1...Bxc8
        • 2.Bxd5#
      • 1...Sc6
        • 2.Bxd5#
      • 1...Sc5
        • 2.Rd4#
      • 1...c5
        • 2.Rd4#
      • 1...c6
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::B(F),XP(f)
    • S(d);S_CUTB(h)::B(F),XP(f)
    • S(g);SBLOCK::R1(A)
  • Tries
    • Try
      • B(F);N_PINP(f)
      • Threat
        • B(F)
      • Vars
        • S(g);SBLOCK::R1(A)
      • Refutation
        • P(f);
    • Try
      • B(F);N_PINP(f)
      • Threat
        • DUALS(2)
      • Refutation
        • P(f);
    • Try
      • Q(G);CHECK
      • Vars
        • S(d);XQ(G)::B(F),XP(f)
      • Refutation
        • B(h);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(i);XP(D)::QAR1(G)
        • S(d);S_CUTB(h)::B(F),XP(f)
        • P(i);::QAR1(G)
      • Refutation
        • P(i);
  • Actual
    • Q(G);
    • Threat
      • QAR(G)
    • Vars
      • B(h);N_GUARD,XQ(G)::B(F),XP(f)
      • S(d);S_CUTB(h)::B(F),XP(f)
      • S(g);SBLOCK::R1(A)
      • P(i);N_SPINP(f),P_SPINP(i)::R1(A)
      • P(i);S_CUTB(h)::B(F),XP(f)
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