MESON Chess Problem Database

Problem Display
PID: 108727 (2n3n1/1Q1Np3/2q5/1b4K1/1N1pkp1R/4br2/2R5/7B w - - 0 1)

Krzeli, Ratislav

Canadian Chess Chat, 1981

2n3n1/1Q1Np3/2q5/1b4K1/1N1pkp1R/4br2/2R5/7B

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5+
      • 2.Qxd5#
    • 1...Bf1
      • 2.Qxc6#
    • 1...Be2
      • 2.Qxc6#
    • 1...Bd3
      • 2.Qxc6#
    • 1...Ba6
      • 2.Qxc6#
    • 1...e5
      • 2.Sc5#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Re5#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...e5
        • 2.Rxe5#
      • 1...d3!
    • 1.Rxc6?
      • threat
        • 2.Re6#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...d3
        • 2.Rc4#
      • 1...e5
        • 2.Sc5#
      • 1...e6
        • 2.Rxe6#
      • 1...Sd6!
  • Keys
    • 1.Re2!
      • threat
        • 2.Rxf4#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Bxe2
        • 2.Qxc6#
      • 1...e5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(g);CHECK,OGATE::QAB1(F),XQ(g)
    • B(f);N_GUARD::QAB(F),XQ(g)
    • P(h);SBLOCK::S(G)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • Q(g);CHECK,OGATE::QAB1(F),XQ(g)
        • P(h);::R1(B),XP(h)
      • Refutation
        • P(c);
    • Try
      • R(B);XQ(g)
      • Threat
        • QAB(F)+R(B),DCHECK
      • Vars
        • B(f);OGATE,P_SPINB(f),XR(B)::QAB(F),XB(f)
        • P(c);::QAB(F)+R(B),DCHECK
        • P(h);SBLOCK::S(G)
        • P(h);::QAB(F)+R(B),DCHECK,XP(h)
      • Refutation
        • S(i);
  • Actual
    • R(B);P_PINB(a)
    • Threat
      • R1(D),XP(e)
    • Vars
      • Q(g);CHECK,OGATE::QAB1(F),XQ(g)
      • B(f);N_GUARD,N_SPINB(a),XR(B)::QAB(F),XQ(g)
      • P(h);SBLOCK::S(G)
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