MESON Chess Problem Database

Problem Display
PID: 161846 (B3R3/8/p7/n3N2K/3P3n/6B1/2Npk3/1Q1b4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Chess, 1956

B3R3/8/p7/n3N2K/3P3n/6B1/2Npk3/1Q1b4

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1+
      • 2.Qxd1#
  • Tries
    • 1.Sa1?
      • threat
        • 2.Qd3#
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Ke3+
        • 2.Sf3#
      • 1...Bb3
        • 2.Sc4#
      • 1...Ba4
        • 2.Sd7#
      • 1...Bc2!
    • 1.Sa3?
      • threat
        • 2.Qd3#
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Ke3+
        • 2.Sf3#
      • 1...Bb3
        • 2.Sec4#
      • 1...Ba4
        • 2.Sd7#
      • 1...Bc2!
    • 1.Se3?
      • threat
        • 2.Qd3#
      • 1...Kxe3+
        • 2.Sf3#
      • 1...Bc2!
    • 1.Sd3+?
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Kxd3+!
    • 1.Sc4+?
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Kd3+!
    • 1.Sg4+?
      • 1...Kf1
        • 2.Qxd1#
      • 1...Kd3!
    • 1.Sg6+?
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Kd3+!
    • 1.Sd7+?
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Kd3+!
    • 1.Sf7+?
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Kd3+!
    • 1.Bf3+?
      • 1...Kf1
        • 2.Qxd1#
      • 1...Sxf3!
    • 1.Be4?
      • threat
        • 2.Bd3#
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Bxc2!
    • 1.Qb5+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...axb5!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qd3#
      • 1...Kf1+
        • 2.Qxd1#
      • 1...Ke3+
        • 2.Sf3#
      • 1...Bc2
        • 2.Sed3#
      • 1...Bb3
        • 2.Sc4#
      • 1...Ba4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
        • K(c);CHECK,P-FLIGHT::R(H)+S(E)
        • B(a);::R(H)+S(E)
      • Refutation
        • B(a);
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
        • K(c);CHECK,P-FLIGHT::R(H)+S(E)
        • B(a);::R(H)+S(E)
      • Refutation
        • B(a);
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);CHECK,P-FLIGHT,XS(B)::R(H)+S(E)
      • Refutation
        • B(a);
    • Try
      • S(E);CHECK
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);CHECK,S_FLIGHT,XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);CHECK,S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P_PINS(E),P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);P_PINS(E),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);CHECK,S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);CHECK,S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(c);CHECK,S_FLIGHT
    • Try
      • B(G);CHECK
      • Vars
        • K(c);P_PINB(G),P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • S(d);XB(G)
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • Refutation
        • B(a);XS(B)
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB(A),XS(e)
      • Refutation
        • P(f);XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);CHECK,P_SPINB(a),S_FLIGHT::QAR2(A),XB(a)
      • K(c);CHECK,P-FLIGHT::R(H)+S(E)
      • B(a);::R(H)+S(E)
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