MESON Chess Problem Database

Problem Display
PID: 193910 (7r/3R3P/1p2pR2/1Kp3p1/4k3/3p4/4p3/Q5B1 w - - 0 1)

Smith, Bernardo

Pittsburgh Gazette-Times, 1916

7r/3R3P/1p2pR2/1Kp3p1/4k3/3p4/4p3/Q5B1

#2

6 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...e1Q
      • 2.Qxe1#
    • 1...e1S
      • 2.Qxe1#
    • 1...e1B
      • 2.Qxe1#
    • 1...e1R
      • 2.Qxe1#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Bxc5?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qh1#
        • 2.Qa4#
      • 1...bxc5!
    • 1.Rd4+?
      • 1...cxd4
        • 2.Qxd4#
      • 1...Ke5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qh1#
      • 1...Rxh7
        • 2.Qa8#
      • 1...cxd4
        • 2.Qxd4#
      • 1...d2
        • 2.Qb1#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(d);N_GUARD::QAR1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);::QAR1(A),XP(g)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(B);XP(d)
      • Threat
        • QAR1(A)
      • Refutation
        • P(f);XB(B)
    • Try
      • R(E);CHECK
      • Vars
        • P(d);OGATE,XR(E)::QAR1(A),XP(d)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAB(A)
    • Vars
      • R(h);N_GUARD,XP(F)::QAB(A)
      • P(d);OGATE,XB(B)::QAR1(A),XP(d)
      • P(b);OGATEB::QAB(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
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