MESON Chess Problem Database

Problem Display
PID: 99625 (2b4r/4n3/6r1/pB1k2p1/4R3/B3PPP1/1N3b1Q/1K6 w - - 0 1)

Ersek, Tibor

Magyar Sakkszovetseg, 1966

2b4r/4n3/6r1/pB1k2p1/4R3/B3PPP1/1N3b1Q/1K6

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qd2#
    • 1...Bxg3
      • 2.Qd2#
    • 1...Sc6
      • 2.Bc4#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sc3#
      • 1...Be1
        • 2.Qa2#
      • 1...Rc6!
    • 1.Sa4?
      • threat
        • 2.Sc3#
      • 1...Be1
        • 2.Qa2#
      • 1...Rc6!
    • 1.Sc4?
      • threat
        • 2.Re5#
      • 1...Bxe3
        • 2.Sxe3#
      • 1...Bxg3
        • 2.Qd2#
      • 1...Re6
        • 2.Rd4#
      • 1...Sc6
        • 2.Sb6#
      • 1...Bf5!
    • 1.g4?
      • threat
        • 2.Re5#
        • 2.Qe5#
      • 1...Bxe3
        • 2.Qe5#
      • 1...Re6
        • 2.Rd4#
      • 1...Bg3
        • 2.Qd2#
      • 1...Bf5
        • 2.Qe5#
      • 1...Sc6
        • 2.Bc4#
      • 1...Rxh2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Re5#
      • 1...Bxe3
        • 2.Qa2#
      • 1...Bxg3
        • 2.Qa2#
      • 1...Re6
        • 2.Rd4#
      • 1...Sc6
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::QAR(C)
    • B(a);OGATE,XP(G)::QAR(C)
    • S(f);SBLOCK::B(I)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);OGATE::QAB(C)
      • Refutation
        • R(e);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);OGATE::QAB(C)
      • Refutation
        • R(e);
    • Try
      • S(B);
      • Threat
        • R1(H)
      • Vars
        • B(a);XP(E)::S(B),XB(a)
        • B(a);OGATE,XP(G)::QAR(C)
        • R(e);SBLOCK::R1(H)
        • S(f);S_CUTR(e)::S(B)
      • Refutation
        • B(g);P_PINR(H)
    • Try
      • P(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(E)::QAR1(C)
        • R(e);SBLOCK::R1(H)
        • B(a);OGATE::QAR(C)
        • B(g);P_PINR(H)::QAR1(C)
        • S(f);SBLOCK::B(I)
      • Refutation
        • R(h);XQ(C)
  • Actual
    • S(B);
    • Threat
      • R1(H)
    • Vars
      • B(a);OGATE,XP(E)::QAB(C)
      • B(a);OGATE,XP(G)::QAB(C)
      • R(e);SBLOCK::R1(H)
      • S(f);SBLOCK::B(I)
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