MESON Chess Problem Database

Problem Display
PID: 195191 (2Q2N2/1p6/1p6/1p5p/1P2kb1P/RN5R/5p2/5K2 w - - 0 1)

McIlvane, John A

Pittsburgh Gazette-Times, 1918

2Q2N2/1p6/1p6/1p5p/1P2kb1P/RN5R/5p2/5K2

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qe6#
    • 1...Ke5
      • 2.Qe6#
  • Tries
    • 1.Qg4?
      • 1...Kd5
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...hxg4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kf5
        • 2.Qe6#
      • 1...bxc4!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kf5
        • 2.Qe6#
      • 1...bxc6!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kf5
        • 2.Qe6#
      • 1...Be5!
  • Keys
    • 1.Rf3!
      • 1...Kxf3
        • 2.Sd2#
      • 1...Kd5
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Be3
        • 2.Qf5#
      • 1...Bc1
        • 2.Qf5#
      • 1...Bd2
        • 2.Qf5#
      • 1...Bh2
        • 2.Qf5#
      • 1...Bg3
        • 2.Qf5#
      • 1...Be5
        • 2.Qxb7#
      • 1...Bg5
        • 2.Qf5#
      • 1...Bd6
        • 2.Qf5#
      • 1...Bh6
        • 2.Qf5#
      • 1...Bc7
        • 2.Qf5#
      • 1...Bb8
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(G)
    • K(b);P-FLIGHT::QAR1(G)
  • Tries
    • Try
      • Q(G);P_PINB(c)
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::QAB1(G)
        • K(b);N_SPINB(c),P-FLIGHT::QAR1(G)
      • Refutation
        • P(e);N_SPINB(c),XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • P(g);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • R(D);
    • Vars
      • K(b);S_FLIGHT,XR(D)::R(B)+S(C),DCHECK
      • K(b);S_FLIGHT::QAB1(G)
      • K(b);P-FLIGHT::QAR1(G)
      • B(c);::QAB1(G)
      • B(c);SBLOCK::QAB(G),XP(g)
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