MESON Chess Problem Database

Problem Display
PID: 178722 (8/8/8/1p6/1P1pN3/1BPkppN1/p2r1P2/K3Q3 w - - 0 1)

Maleika, Gerhard

8th Comm., Problem Observer Block-Threat Ty., 2009-2010

8/8/8/1p6/1P1pN3/1BPkppN1/p2r1P2/K3Q3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1+
      • 2.Qxd1#
    • 1...Rb2
      • 2.Sc5#
    • 1...Rc2
      • 2.Sc5#
    • 1...Re2
      • 2.Sc5#
    • 1...Rxf2
      • 2.Sc5#
    • 1...exf2
      • 2.Qxd2#
    • 1...e2
      • 2.Qxd2#
    • 1...dxc3
      • 2.Qxe3#
  • Tries
    • 1.cxd4?
      • threat
        • 2.Qxe3#
      • 1...Rd1+
        • 2.Qxd1#
      • 1...Rxf2
        • 2.Qc3#
      • 1...exf2
        • 2.Qxd2#
      • 1...Re2
        • 2.Qc3#
      • 1...e2
        • 2.Qxd2#
      • 1...Kxd4!
    • 1.c4?
      • 1...Rd1+
        • 2.Qxd1#
      • 1...Rxf2
        • 2.Sc5#
      • 1...exf2
        • 2.Qxd2#
      • 1...Rb2
        • 2.Sc5#
      • 1...Rc2
        • 2.Sc5#
      • 1...Re2
        • 2.Sc5#
      • 1...e2
        • 2.Qxd2#
      • 1...bxc4!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Sc5#
      • 1...exf2
        • 2.Qxd2#
      • 1...dxc3
        • 2.Qxc3#
      • 1...Rc2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);CHECK,OGATEB::QAR2(B),XR(b)
    • R(b);::S(H)
    • R(b);XP(C)::S(H)
    • P(d);N_GUARD,XP(C)::QAR1(B),XR(b)
    • P(d);N_GUARD::QAR1(B),XR(b)
    • P(f);N_GUARD,XP(E)::QAR1(B),XP(d)
  • Tries
    • Try
      • P(E);XP(f)
      • Threat
        • QAR1(B),XP(d)
      • Vars
        • R(b);CHECK,OGATEB::QAR2(B),XR(b)
        • R(b);OGATE,XP(C)::QAR1(B)
        • P(d);N_GUARD,XP(C)::QAR1(B),XR(b)
        • R(b);OGATE::QAR1(B)
        • P(d);N_GUARD::QAR1(B),XR(b)
      • Refutation
        • K(c);P-FLIGHT,XP(E)
    • Try
      • P(E);
      • Vars
        • R(b);CHECK,OGATEB::QAR2(B),XR(b)
        • R(b);XP(C)::S(H)
        • P(d);N_GUARD,XP(C)::QAR1(B),XR(b)
        • R(b);::S(H)
        • P(d);N_GUARD::QAR1(B),XR(b)
      • Refutation
        • P(g);XP(E)
  • Actual
    • Q(B);
    • Threat
      • S(H)
    • Vars
      • P(d);N_GUARD,XP(C)::QAR1(B),XR(b)
      • P(f);OGATE,XP(E)::QAR1(B),XP(f)
      • R(b);N_GUARD::QAB1(B),XR(b)
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