MESON Chess Problem Database

Problem Display
PID: 59569 (2R1R3/3k4/1P3p2/P1P5/K1B3qb/P1pP1p2/8/3Q4 w - - 0 1)

Maleika, Gerhard

The Problemist, 2005

2R1R3/3k4/1P3p2/P1P5/K1B3qb/P1pP1p2/8/3Q4

#2

10 + 6

136 Problem Observer 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Bb5#
    • 1...Qf5
      • 2.Bb5#
    • 1...Qh5
      • 2.Bb5#
      • 2.Be6#
    • 1...Qe6
      • 2.Bxe6#
    • 1...Qg1
      • 2.Bb5#
      • 2.Be6#
    • 1...Qg2
      • 2.Bb5#
      • 2.Be6#
    • 1...Qg3
      • 2.Bb5#
      • 2.Be6#
    • 1...Qxc4+
      • 2.dxc4#
    • 1...Qe4
      • 2.dxe4#
    • 1...Qg5
      • 2.Bb5#
      • 2.Be6#
    • 1...Qg6
      • 2.Bb5#
      • 2.Be6#
    • 1...Qg7
      • 2.Bb5#
      • 2.Be6#
    • 1...Qg8
      • 2.Bb5#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Bb5#
      • 1...Qxc4+
        • 2.dxc4#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qe4
        • 2.dxe4#
      • 1...Qg8!
    • 1.Kb4?
      • threat
        • 2.Qa4#
      • 1...Qxc4+
        • 2.dxc4#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qe4
        • 2.dxe4#
      • 1...c2!
    • 1.d4?
      • threat
        • 2.Bb5#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qe4!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Rcd8#
      • 1...Qxc4+
        • 2.dxc4#
      • 1...f5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_PINB(E)::B(E)
    • Q(c);N_PINB(E)::B(E),XQ(c)
    • Q(c);CHECK,OGATE,XB(E)::QAR(A)+P(C),XQ(c)
    • Q(c);OGATE::QAR(A)+P(C),XQ(c)
  • Tries
    • Try
      • K(D);N_SPINB(E),S_FLIGHT
      • Threat
        • B(E)
      • Vars
        • Q(c);CHECK,OGATE,XB(E)::QAR(A)+P(C),XQ(c)
        • Q(c);N_GUARD,P_PINB(E)::B(E),XQ(c)
        • Q(c);OGATE::QAR(A)+P(C),XQ(c)
      • Refutation
        • Q(c);P_PINB(E)
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • Q(c);CHECK,OGATE,XB(E)::QAR(A)+P(C),XQ(c)
        • Q(c);N_PINB(E)::B(E),XQ(c)
        • Q(c);OGATE::QAR(A)+P(C),XQ(c)
      • Refutation
        • P(a);
    • Try
      • P(C);N_SPINB(E)
      • Threat
        • B(E)
      • Vars
        • Q(c);OGATE,P_PINB(E),P_SPINQ(c),XP(C)::QAR(A),XQ(c)
        • Q(c);N_GUARD::B(E),XQ(c)
      • Refutation
        • Q(c);
  • Actual
    • K(D);N_SPINB(E),S_FLIGHT
    • Threat
      • R1(I)
    • Vars
      • Q(c);CHECK,OGATE,XB(E)::QAR(A)+P(C),XQ(c)
      • P(e);S_CUTQ(c)::B(E)
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