MESON Chess Problem Database

Problem Display
PID: 91426 (1B6/2NN4/2p1p1K1/p3P3/1p1kp1p1/Rn2p1q1/3PB3/6Q1 w - - 0 1)

Molenbroek, H

Probleemblad, 1992

1B6/2NN4/2p1p1K1/p3P3/1p1kp1p1/Rn2p1q1/3PB3/6Q1

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxe3#
    • 1...Qh2
      • 2.Qxe3#
    • 1...Qh4
      • 2.Qxe3#
    • 1...Qxe5
      • 2.Qxe3#
    • 1...Qg2
      • 2.Qxe3#
    • 1...Sa1
      • 2.Qxa1#
    • 1...Sxd2
      • 2.Qa1#
    • 1...Sc5
      • 2.Qa1#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sxe6#
      • 1...Kxe5
        • 2.Sb5#
      • 1...Qxe5
        • 2.Qxe3#
      • 1...Sc5
        • 2.Qa1#
      • 1...Kc5!
    • 1.Ba7+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qa1#
      • 1...c5!
    • 1.Rxb3?
      • threat
        • 2.Qa1#
      • 1...Qe1
        • 2.Qxe3#
        • 2.dxe3#
      • 1...Qxg1!
    • 1.Rxa5?
      • threat
        • 2.Sxe6#
      • 1...Qxe5
        • 2.Qxe3#
      • 1...Sxd2
        • 2.Qa1#
      • 1...Sxa5
        • 2.Qa1#
      • 1...Sc5
        • 2.Qa1#
      • 1...c5!
    • 1.dxe3+?
      • 1...Kc3
        • 2.Qc1#
      • 1...Qxe3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sxe6#
      • 1...Kc5
        • 2.Ba7#
      • 1...Kxe5
        • 2.Sb5#
      • 1...Qxe5
        • 2.Qxe3#
      • 1...Sc5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD::QAB1(A),XP(b)
    • Q(c);N_GUARD,XP(E)::QAB1(A),XP(b)
    • S(a);N_GUARD::QAB(A),XS(a)
    • S(a);N_GUARD,XP(B)::QAB(A)
    • S(a);N_GUARD::QAB(A)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(G),XP(j)
      • Vars
        • K(e);N_SPINP(b),S_FLIGHT,XP(E)::B(I)+S(G)
        • Q(c);N_GUARD,SBLOCK,XP(E)::QAB1(A),XP(b)
        • S(a);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(I);CHECK
      • Refutation
        • P(i);
    • Try
      • R(D);XS(a)
      • Threat
        • QAB(A)
      • Refutation
        • Q(c);N_SPINP(b),XQ(A)
    • Try
      • R(D);XP(h)
      • Threat
        • S(G),XP(j)
      • Vars
        • Q(c);N_GUARD,XP(E)::QAB1(A),XP(b)
        • S(a);N_GUARD,XP(B)::QAB(A)
        • S(a);N_GUARD,XR(D)::QAB(A)
        • S(a);N_GUARD::QAB(A)
      • Refutation
        • P(i);
    • Try
      • P(B);CHECK,XP(b)
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::QAR2(A)
      • Refutation
        • Q(c);P_SPINQ(c),XP(B)
  • Actual
    • S(H);
    • Threat
      • S(G),XP(j)
    • Vars
      • K(e);S_FLIGHT::B(I)
      • K(e);N_SPINP(b),S_FLIGHT,XP(E)::B(I)+S(G)
      • Q(c);N_GUARD,SBLOCK,XP(E)::QAB1(A),XP(b)
      • S(a);N_GUARD,SBLOCK::QAB(A)
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