MESON Chess Problem Database

Problem Display
PID: 274581 (2B5/8/R4Bpp/1PP2q2/R1K3kP/2PN2N1/6PP/n7 w - - 0 1)

Popa, Nicolae

Buletin Problemistic, 1998

2B5/8/R4Bpp/1PP2q2/R1K3kP/2PN2N1/6PP/n7

#2

13 + 5

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6+
      • 2.Bxe6#
    • 1...Qd7
      • 2.Bxd7#
    • 1...Qxc8
      • 2.Kd5#
    • 1...Sb3
      • 2.Kxb3#
  • Tries
    • 1.Kb4?
      • threat
        • 2.Ka3#
        • 2.Ka5#
      • 1...Sb3
        • 2.Kxb3#
      • 1...Sc2+!
    • 1.Bg5?
      • threat
        • 2.Sf2#
        • 2.Se5#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...hxg5!
    • 1.Be7?
      • threat
        • 2.Rxg6#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...g5!
    • 1.Bd8?
      • threat
        • 2.Rxg6#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...g5!
    • 1.Rd6?
      • threat
        • 2.Rd4#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...Sb3
        • 2.Kxb3#
      • 1...Sc2!
    • 1.b6?
      • threat
        • 2.Kb5#
      • 1...Qd7
        • 2.Bxd7#
      • 1...Sb3
        • 2.Kxb3#
      • 1...Sc2!
  • Keys
    • 1.Re6!
      • threat
        • 2.Re4#
      • 1...Qxd3+
        • 2.Kxd3#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Qxe6+
        • 2.Bxe6#
      • 1...Qxc5+
        • 2.Kxc5#
      • 1...Qd5+
        • 2.Kxd5#
      • 1...Qe5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(c);CHECK,OGATEB::B(M),XQ(c)
    • Q(c);OGATEB::B(M),XQ(c)
    • Q(c);N_SPINQ(c),P_PINP(J),XB(M)::R(F)+K(G)
    • S(a);::R(F)+K(G),XS(a)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R(F)+K(G),XS(a)
      • Refutation
        • S(a);CHECK
    • Try
      • B(L);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,OGATEB::B(M),XQ(c)
      • Refutation
        • P(e);XB(L)
    • Try
      • B(L);
      • Threat
        • R(K),XP(d)
      • Vars
        • Q(c);CHECK,OGATEB::B(M),XQ(c)
      • Refutation
        • P(d);
    • Try
      • B(L);
      • Threat
        • R(K),XP(d)
      • Vars
        • Q(c);CHECK,OGATEB::B(M),XQ(c)
      • Refutation
        • P(d);
    • Try
      • R(K);
      • Threat
        • R(K)
      • Vars
        • Q(c);CHECK,OGATEB::B(M),XQ(c)
        • S(a);::R(F)+K(G),XS(a)
      • Refutation
        • S(a);
    • Try
      • P(I);
      • Threat
        • R(F)+K(G)
      • Vars
        • Q(c);OGATEB::B(M),XQ(c)
        • S(a);::R(F)+K(G),XS(a)
      • Refutation
        • S(a);
  • Actual
    • R(K);N_PINQ(c)
    • Threat
      • R(K)
    • Vars
      • Q(c);CHECK,XS(D)::R(F)+K(G),XQ(c)
      • Q(c);CHECK::B(M)+R(K),DCHECK,XQ(c)
      • Q(c);CHECK,OGATE,P_SPINQ(c),XR(K)::B(M),XQ(c)
      • Q(c);CHECK,XP(J)::R(F)+K(G),XQ(c)
      • Q(c);CHECK::R(F)+K(G),XQ(c)
      • Q(c);OGATEB::B(M)+R(K),XQ(c)
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