MESON Chess Problem Database

Problem Display
PID: 84953 (4K1Q1/1R6/N1N2R2/2PpP2B/P1k2p2/7r/n1PbP1n1/Bb6 w - - 0 1)

Petite, Efren

Problemas, 1965

4K1Q1/1R6/N1N2R2/2PpP2B/P1k2p2/7r/n1PbP1n1/Bb6

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.cxb3#
    • 1...Rd3
      • 2.exd3#
    • 1...Bc1
      • 2.Sa5#
    • 1...Be3
      • 2.Sa5#
    • 1...Ba5
      • 2.Sxa5#
    • 1...Sc3
      • 2.Rb4#
    • 1...Sb4
      • 2.Sa5#
    • 1...Se3
      • 2.Rxf4#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qxd5#
      • 1...Sc3
        • 2.Rb4#
      • 1...Rd3
        • 2.exd3#
      • 1...Se3
        • 2.Rxf4#
      • 1...Sb4!
    • 1.Bf3?
      • threat
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Rh8
        • 2.Bxd5#
      • 1...Sc3
        • 2.Rb4#
      • 1...Sb4
        • 2.Sa5#
      • 1...Se3
        • 2.Rxf4#
      • 1...Rxf3!
    • 1.Rxf4+?
      • 1...Bxf4
        • 2.Sa5#
      • 1...Sxf4!
    • 1.Rd6?
      • threat
        • 2.Qxd5#
      • 1...Rd3
        • 2.exd3#
      • 1...Sc3
        • 2.Rb4#
      • 1...Sb4
        • 2.Sa5#
      • 1...Se3!
    • 1.Rb4+?
      • 1...Sxb4
        • 2.Sa5#
      • 1...Bxb4!
    • 1.Rd7?
      • threat
        • 2.Qxd5#
      • 1...Rd3
        • 2.exd3#
      • 1...Sb4
        • 2.Sa5#
      • 1...Se3
        • 2.Rxf4#
      • 1...Sc3!
    • 1.e4?
      • threat
        • 2.Qxd5#
      • 1...fxe4 ep
        • 2.Be2#
      • 1...Sc3
        • 2.Rb4#
      • 1...Sb4
        • 2.Sa5#
      • 1...Se3
        • 2.Be2#
      • 1...Rd3!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Bxd5#
      • 1...Rd3
        • 2.exd3#
      • 1...Sc3
        • 2.Rb4#
      • 1...Sb4
        • 2.Sa5#
      • 1...Se3
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(e);OGATE::P(B),XR(e)
    • R(e);OGATE::P(C),XR(e)
    • B(c);N_GUARD::S(I)
    • B(c);N_GUARD::S(I),XB(c)
    • S(b);N_GUARD,S_CUTB(c)::R1(K)
    • S(b);S_CUTB(c)::S(I)
    • S(d);N_GUARD,S_CUTB(c)::R(J),XP(g)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAB1(M),XP(h)
      • Vars
        • S(b);N_GUARD,S_CUTB(c)::R1(K)
        • R(e);OGATE::P(C),XR(e)
        • S(d);N_GUARD,S_CUTB(c)::R(J),XP(g)
      • Refutation
        • S(b);
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);P_PINQ(M)::B(G),XP(h)
        • S(b);N_GUARD,S_CUTB(c)::R1(K)
        • S(b);S_CUTB(c)::S(I)
        • S(d);N_GUARD,S_CUTB(c)::R(J),XP(g)
      • Refutation
        • R(e);XB(G)
    • Try
      • R(J);CHECK,XP(g)
      • Vars
        • B(c);XR(J)::S(I)
      • Refutation
        • S(d);XR(J)
    • Try
      • R(J);
      • Threat
        • QAB1(M),XP(h)
      • Vars
        • R(e);OGATE::P(C),XR(e)
        • S(b);N_GUARD,S_CUTB(c)::R1(K)
        • S(b);S_CUTB(c)::S(I)
      • Refutation
        • S(d);
    • Try
      • R(K);CHECK
      • Vars
        • S(b);XR(K)::S(I)
      • Refutation
        • B(c);XR(K)
    • Try
      • R(K);
      • Threat
        • QAB1(M),XP(h)
      • Vars
        • R(e);OGATE::P(C),XR(e)
        • S(b);S_CUTB(c)::S(I)
        • S(d);N_GUARD,S_CUTB(c)::R(J),XP(g)
      • Refutation
        • S(b);
    • Try
      • P(C);
      • Threat
        • QAB1(M),XP(h)
      • Vars
        • P(g);EP,S_CUTR(e),XP(C)::B(G)
        • S(b);N_GUARD,S_CUTB(c)::R1(K)
        • S(b);S_CUTB(c)::S(I)
        • S(d);S_CUTR(e)::B(G)
      • Refutation
        • R(e);
  • Actual
    • B(G);
    • Threat
      • B(G),XP(h)
    • Vars
      • R(e);OGATE::P(C),XR(e)
      • S(b);N_GUARD,S_CUTB(c)::R1(K)
      • S(b);S_CUTB(c)::S(I)
      • S(d);N_GUARD,S_CUTB(c)::R(J),XP(g)
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