MESON Chess Problem Database

Problem Display
PID: 213151 (7R/1b2n3/8/6p1/2Q5/6BP/3PP1kP/4K2R w - - 0 1)

Rothwell, Stephen

Badische Neueste Nachrichten, 1992

7R/1b2n3/8/6p1/2Q5/6BP/3PP1kP/4K2R

#2

9 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Ba6
      • 2.Qe4#
    • 1...Bc8
      • 2.Qe4#
    • 1...Sd5
      • 2.Qe4#
    • 1...Sc6
      • 2.Qd5#
      • 2.Qe4#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qf1#
      • 1...Kxh1
        • 2.Qf1#
      • 1...Bf3
        • 2.Qxf3#
      • 1...gxf4!
    • 1.e3?
      • threat
        • 2.Qf1#
      • 1...Kxh1
        • 2.Qf1#
      • 1...Ba6
        • 2.Qe4#
      • 1...Kf3!
    • 1.e4?
      • threat
        • 2.Qf1#
      • 1...Kxh1
        • 2.Qf1#
      • 1...Kf3
        • 2.Qe2#
      • 1...Ba6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf1#
      • 1...Kxh1
        • 2.Qf1#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAB(H),XB(c)
    • B(c);N_GUARD::QAB(H)
    • S(d);S_CUTB(c)::QAB(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • K(a);S_FLIGHT,XR(B)::QAR2(H)
        • B(c);N_GUARD::QAB1(H),XB(c)
      • Refutation
        • P(b);XQ(H)
    • Try
      • P(D);
      • Threat
        • QAB1(H)
      • Vars
        • K(a);S_FLIGHT,XR(B)::QAR2(H)
        • B(c);N_GUARD::QAB(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);
      • Threat
        • QAB1(H)
      • Vars
        • K(a);S_FLIGHT,XR(B)::QAR2(H)
        • K(a);S_FLIGHT::QAB1(H)
      • Refutation
        • B(c);
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAR2(H)
      • B(c);N_GUARD::QAB1(H),XB(c)
      • S(d);OGATE::QAB(H),XB(c)
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