MESON Chess Problem Database

Problem Display
PID: 159787 (2B5/8/n1pp3R/3kp3/8/1PQpP3/Nn3B1K/8 w - - 0 1)

Andrew, Frederick William

Eastern Daily Press, 0000

2B5/8/n1pp3R/3kp3/8/1PQpP3/Nn3B1K/8

#2

8 + 7

15351 SCPF/BCPS Black Books 2017
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...e4
      • 2.Be6#
      • 2.Rh5#
      • 2.Qd4#
    • 1...c5
      • 2.Bb7#
  • Tries
    • 1.Bf5?
      • threat
        • 2.e4#
      • 1...Sc5
        • 2.Sb4#
      • 1...e4
        • 2.Be6#
        • 2.Qd4#
      • 1...c5!
    • 1.Rh4?
      • threat
        • 2.e4#
      • 1...Sc5
        • 2.Sb4#
      • 1...e4
        • 2.Rh5#
        • 2.Qd4#
      • 1...c5!
    • 1.Rxd6+?
      • 1...Ke4
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Qb4?
      • threat
        • 2.Sc3#
        • 2.Be6#
        • 2.Rxd6#
        • 2.e4#
      • 1...Sc4
        • 2.Sc3#
        • 2.Qxc4#
      • 1...e4
        • 2.Rh5#
        • 2.Qxd6#
        • 2.Qd4#
      • 1...c5
        • 2.Bb7#
        • 2.Qb7#
      • 1...Sd1
        • 2.Be6#
        • 2.Rxd6#
        • 2.Qc4#
        • 2.e4#
      • 1...Sa4
        • 2.Be6#
        • 2.Rxd6#
        • 2.Qc4#
        • 2.e4#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sc7
        • 2.Sc3#
        • 2.Rxd6#
        • 2.e4#
      • 1...Sxb4!
    • 1.Qa5+?
      • 1...Sc5
        • 2.Sc3#
      • 1...c5
        • 2.Bb7#
      • 1...Ke4!
    • 1.Qxd3+?
      • 1...Kc5
        • 2.e4#
      • 1...Sxd3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.e4#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc5
        • 2.Qa5#
      • 1...Sc5
        • 2.Sc3#
      • 1...e4
        • 2.Rh5#
      • 1...c5
        • 2.Bb7#

This anticipates 2293(1891)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAB1(E)
    • S(a);N_GUARD::QAB1(E),XS(a)
    • P(f);OGATEB::B(H)
  • Tries
    • Try
      • B(H);
      • Threat
        • P(F)
      • Vars
        • S(e);N_GUARD::S(A)
      • Refutation
        • P(f);
    • Try
      • R(G);
      • Threat
        • P(F)
      • Vars
        • S(e);N_GUARD::S(A)
      • Refutation
        • P(f);
    • Try
      • R(G);CHECK,XP(g)
      • Vars
        • K(c);S_FLIGHT::QAB(E),XP(f)
      • Refutation
        • K(c);P-FLIGHT,XR(G)
    • Try
      • Q(E);
      • Threat
        • DUALS(4)
      • Vars
        • S(e);::S(A)
      • Refutation
        • S(e);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(A)
        • P(f);P_SPINP(f),S_CUTS(e)::B(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::B(B)+P(F)
      • Refutation
        • S(a);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • P(F)
    • Vars
      • K(c);S_FLIGHT::QAB(E)
      • K(c);P-FLIGHT::QAR2(E)
      • S(e);SBLOCK::S(A)
      • P(d);OGATEB,SBLOCK::R(G)
      • P(f);OGATEB,SBLOCK::B(H)
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