MESON Chess Problem Database

Problem Display
PID: 214589 (2KQ4/3p4/2p1p3/P4p2/2Pk1r2/3PbPB1/4R3/1N3B2 w - - 0 1)

Martindale, Frank W

Newark Sunday Call, 1879

2KQ4/3p4/2p1p3/P4p2/2Pk1r2/3PbPB1/4R3/1N3B2

#2

10 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Rd2#
    • 1...d6
      • 2.Qxd6#
  • Tries
    • 1.Qb6+?
      • 1...Kxd3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rd2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...c5
        • 2.Qd6#
      • 1...Ke5!
    • 1.Qf6+?
      • 1...Kxd3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rd2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
        • 2.Qc3#
      • 1...e5
        • 2.Qd6#
      • 1...Kc5!
  • Keys
    • 1.Kxd7!
      • 1...Kxd3
        • 2.Rd2#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qh8#
      • 1...Rxf3
        • 2.Kxc6#
      • 1...Re4
        • 2.Kxc6#
      • 1...Rg4
        • 2.Kxc6#
      • 1...Rh4
        • 2.Kxc6#
      • 1...Bc1
        • 2.Kxc6#
      • 1...Bg1
        • 2.Kxc6#
      • 1...Bd2
        • 2.Kxc6#
      • 1...Bf2
        • 2.Kxc6#
      • 1...c5
        • 2.Kxe6#
      • 1...e5
        • 2.Kxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(D)::B(B)+R(C),DCHECK
    • P(g);OGATE::QAR2(J),XP(g)
  • Tries
    • Try
      • Q(J);CHECK,N_PINP(g)
      • Vars
        • P(e);OGATE,P_SPINP(e)::QAR2(J)
      • Refutation
        • K(b);P_SPINB(a),P_SPINR(c),S_FLIGHT
    • Try
      • Q(J);CHECK,N_PINP(g)
      • Vars
        • P(f);OGATE,P_SPINP(f)::QAR2(J)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(I);S_FLIGHT,XP(g)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(D)::B(B)+R(C),DCHECK
      • K(b);S_FLIGHT::QAB1(J)
      • K(b);P_SPINB(a),P_SPINR(c),S_FLIGHT::QAB(J)
      • R(c);XP(E)::QAR(J)+K(I),XP(e)
      • R(c);::QAR(J)+K(I),XP(e)
      • B(a);::QAR(J)+K(I),XP(e)
      • P(e);SBLOCK::QAR(J)+K(I),XP(f)
      • P(f);SBLOCK::QAR(J)+K(I),XP(e)
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