MESON Chess Problem Database

Problem Display
PID: 175242 (3R4/1Q5b/Kp2pN2/R1N1k1P1/6pP/p2Pq1p1/4Pr2/2B5 w - - 0 1)

Barry, Henry William

Boston Sunday Post, 1902

3R4/1Q5b/Kp2pN2/R1N1k1P1/6pP/p2Pq1p1/4Pr2/2B5

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sxe6#
    • 1...Qxd3+
      • 2.Sxd3#
    • 1...Rf5
      • 2.Qc7#
      • 2.Qb8#
    • 1...Bxd3+
      • 2.Sxd3#
    • 1...Bf5
      • 2.Qc7#
      • 2.Qb8#
  • Tries
    • 1.Sxe6+?
      • 1...Kxe6
        • 2.Qd7#
      • 1...bxa5
        • 2.Qd5#
      • 1...b5
        • 2.Qd5#
      • 1...Qc5!
    • 1.Scd7+?
      • 1...Kf4
        • 2.Sh5#
      • 1...Kd6
        • 2.Se5#
        • 2.Sxb6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Kd4!
    • 1.Rd5+?
      • 1...Kf4
        • 2.Sxe6#
        • 2.Sh5#
      • 1...exd5!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Sxe6#
        • 2.Sh5#
      • 1...exd5!
    • 1.d4+?
      • 1...Kf4
        • 2.Sxe6#
      • 1...Qxd4
        • 2.Sd3#
      • 1...Kf5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sxg4#
      • 1...Qxd3+
        • 2.Sxd3#
      • 1...Bxd3+
        • 2.Sxd3#
      • 1...Kf4
        • 2.Sxe6#
      • 1...Kf5
        • 2.Sfd7#
      • 1...Qxg5
        • 2.Qxe6#
      • 1...Qxe2
        • 2.Qxe6#
      • 1...Rxf6
        • 2.Qxf6#
      • 1...Qd4
        • 2.Qxe6#
      • 1...Qf4
        • 2.Qxe6#
      • 1...Qf3
        • 2.Qxe6#
      • 1...Qe4
        • 2.Qxe6#
      • 1...Rf4
        • 2.Qxe6#
      • 1...Rf5
        • 2.Qc7#
      • 1...Bf5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(f);P_SPINQ(c),S_FLIGHT::S(F),XP(h)
    • Q(c);CHECK,XP(C)::R(E)+S(F),DCHECK,XQ(c)
    • B(i);CHECK,XP(C)::R(E)+S(F),DCHECK,XB(i)
  • Tries
    • Try
      • S(F);CHECK,XP(h)
      • Vars
        • K(f);P-FLIGHT,XS(F)::QAB1(J)
        • P(g);XR(E)::QAR1(J)
        • P(g);P_SPINP(g)::QAR1(J)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P_SPINQ(c),S_FLIGHT::S(I)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(K);CHECK
      • Refutation
        • P(h);XR(K)
    • Try
      • Q(J);CHECK
      • Refutation
        • P(h);XQ(J)
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P_SPINQ(c),S_FLIGHT::S(F),XP(h)
        • Q(c);XP(C)::R(E)+S(F),DCHECK
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(J);
    • Threat
      • S(I),XP(e)
    • Vars
      • Q(c);CHECK,XP(C)::R(E)+S(F),DCHECK,XQ(c)
      • B(i);CHECK,XP(C)::R(E)+S(F),DCHECK,XB(i)
      • K(f);P_SPINQ(c),S_FLIGHT::S(F),XP(h)
      • K(f);P-FLIGHT::QAR(J)+S(I)
      • Q(c);XP(G)::QAR1(J),XP(h)
      • Q(c);P_PINP(C),XP(B)::QAR1(J),XP(h)
      • R(a);OGATE,XS(I)::QAB1(J),XR(a)
      • Q(c);::QAR1(J),XP(h)
      • R(a);SBLOCK::QAR1(J),XP(h)
      • R(a);SBLOCK::QAB(J)
      • B(i);SBLOCK::QAB(J)
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