MESON Chess Problem Database

Problem Display
PID: 176534 (2B5/8/8/1R2P2p/p6K/P2k4/N2p4/3N2Q1 w - - 0 1)

Coutinho, Jose Ernesto

Schach-Echo, 1970

2B5/8/8/1R2P2p/p6K/P2k4/N2p4/3N2Q1

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Bf5#
    • 1...Ke4
      • 2.Qe3#
  • Tries
    • 1.Bg4?
      • 1...Kc2
        • 2.Bf5#
      • 1...Kc4
        • 2.Be2#
      • 1...Ke4
        • 2.Qe3#
      • 1...hxg4!
    • 1.Bf5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke2!
    • 1.Ba6?
      • 1...Kc2
        • 2.Rb2#
      • 1...Ke2
        • 2.Rb3#
      • 1...Kc4
        • 2.Sb2#
      • 1...Ke4!
    • 1.Be6?
      • 1...Kc2
        • 2.Bf5#
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke2!
    • 1.Bd7?
      • 1...Kc2
        • 2.Bf5#
      • 1...Kc4
        • 2.Sb2#
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke2!
    • 1.Rb4?
      • 1...Kc2
        • 2.Bf5#
      • 1...Ke2!
    • 1.Rc5?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke2!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Rc5#
      • 1...Kc2!
    • 1.Qc5?
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke2!
    • 1.Qh1?
      • 1...Kc2
        • 2.Bf5#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke2!
    • 1.Qg2?
      • 1...Kc4
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kc2!
    • 1.Qg4?
      • threat
        • 2.Sb4#
        • 2.Bf5#
      • 1...Kc2
        • 2.Bf5#
      • 1...hxg4!
  • Keys
    • 1.Bh3!
      • 1...Kc2
        • 2.Bf5#
      • 1...Ke2
        • 2.Qf1#
      • 1...Kc4
        • 2.Bf1#
      • 1...Ke4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(H)
    • K(b);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • B(H);
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • P(d);XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(b);S_FLIGHT::R1(F)
        • K(b);S_FLIGHT::B(H)+R(F)
        • K(b);S_FLIGHT::S(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::S(A)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(b);S_FLIGHT::B(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::B(H)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • B(H);
    • Vars
      • K(b);S_FLIGHT::B(H)
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
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