MESON Chess Problem Database

Problem Display
PID: 136921 (8/4b3/pp2R3/2Pk1P2/1R5p/K3Qr1r/8/7B w - - 0 1)

Ivanic, Petar

Liga Problemista, 1980/4

8/4b3/pp2R3/2Pk1P2/1R5p/K3Qr1r/8/7B

#2

7 + 7

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Bxf3#
    • 1...Bxc5
      • 2.Qb3#
    • 1...Bg5
      • 2.Rd6#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Bf6
      • 2.Rd6#
    • 1...Bd8
      • 2.Rd6#
    • 1...bxc5
      • 2.Qd3#
  • Tries
    • 1.Ka2?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxc5
        • 2.Qb3#
        • 2.Qe4#
        • 2.Qe5#
      • 1...bxc5
        • 2.Qd2#
        • 2.Qd3#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Bf6
        • 2.Rd6#
      • 1...Rh2+!
    • 1.Ka4?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxc5
        • 2.Qb3#
        • 2.Qe4#
        • 2.Qe5#
      • 1...bxc5
        • 2.Qd2#
        • 2.Qd3#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Bf6
        • 2.Rd6#
      • 1...b5+!
    • 1.Qxf3+?
      • 1...Kxc5
        • 2.Rc6#
      • 1...Rxf3+!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Rd4#
      • 1...Bxc5
        • 2.Qb3#
      • 1...bxc5
        • 2.Qd3#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Bf6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::B(A),XR(a)
    • B(g);P_PINR(D),SBLOCK,XP(E)::QAB(C)
    • B(g);N_GUARD::R1(G)
    • B(g);N_GUARD::R1(G),XB(g)
    • P(f);SBLOCK,XP(E)::QAR2(C)
  • Tries
    • Try
      • K(B);N_SPINQ(C),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(g);N_GUARD::R1(G),XB(g)
        • B(g);N_GUARD::R1(G)
      • Refutation
        • R(b);CHECK
    • Try
      • K(B);N_SPINQ(C),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(g);N_GUARD::R1(G),XB(g)
        • B(g);N_GUARD::R1(G)
      • Refutation
        • P(f);CHECK
    • Try
      • Q(C);CHECK,XR(a)
      • Vars
        • K(d);P-FLIGHT,XP(E)::R1(G)
      • Refutation
        • R(b);CHECK,P_SPINR(b),XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R1(D)
    • Vars
      • B(g);P_PINR(D),SBLOCK,XP(E)::QAB(C)
      • P(f);SBLOCK,XP(E)::QAR2(C)
      • B(g);N_GUARD::R1(G),XB(g)
      • B(g);N_GUARD::R1(G)
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