MESON Chess Problem Database

Problem Display
PID: 87385 (8/1Kp2p2/n4Q2/3k4/3p4/1N1B1b2/2R5/4r3 w - - 0 1)

Vovan, Nguyen

Praca, 1997

8/1Kp2p2/n4Q2/3k4/3p4/1N1B1b2/2R5/4r3

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Bc4#
    • 1...Re5
      • 2.Qc6#
    • 1...Re6
      • 2.Qxd4#
    • 1...Be4
      • 2.Bc4#
    • 1...Sb4
      • 2.Rc5#
    • 1...Sc5+
      • 2.Rxc5#
    • 1...Sb8
      • 2.Rc5#
  • Tries
    • 1.Qf5+?
      • 1...Re5
        • 2.Qd7#
      • 1...Kd6+!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Qxd4#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Re4
        • 2.Bc4#
      • 1...Re5
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(a);SBLOCK::B(C)
    • R(a);SBLOCK::QAB1(D)
    • R(a);SBLOCK::QAR1(D),XP(c)
    • B(b);SBLOCK::B(C)
    • S(e);N_GUARD::R1(A)
    • S(e);CHECK,N_GUARD::R1(A),XS(e)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • R(a);P_SPINR(a),SBLOCK::QAR2(D)
      • Refutation
        • K(d);CHECK,P-FLIGHT
  • Actual
    • R(A);
    • Threat
      • QAR1(D),XP(c)
    • Vars
      • S(e);CHECK,N_GUARD::R1(A),XS(e)
      • R(a);SBLOCK::B(C)
      • R(a);SBLOCK::QAR(D)
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