MESON Chess Problem Database

Problem Display
PID: 105368 (6K1/3pNpQn/3bk3/1p2PN2/2p2R1n/5b2/B1pr3B/8 w - - 0 1)

Dragoescu, Radu

4th HM., Revista Romana de Sah, 1987

6K1/3pNpQn/3bk3/1p2PN2/2p2R1n/5b2/B1pr3B/8

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Qxf7#
    • 1...Sg5
      • 2.Qf6#
    • 1...Sf6+
      • 2.Qxf6#
    • 1...Sf8
      • 2.Qf6#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Qxf7#
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Rxh2
        • 2.Rxd6#
      • 1...Rg2
        • 2.Rxd6#
      • 1...Sg5
        • 2.Qf6#
      • 1...f6
        • 2.Qf7#
      • 1...Bh5!
    • 1.Re4?
      • threat
        • 2.Qxf7#
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Bh5
        • 2.exd6#
      • 1...Sg5
        • 2.Qf6#
      • 1...f6
        • 2.Qf7#
      • 1...Rg2!
    • 1.Rg4?
      • threat
        • 2.Qxf7#
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Sg5
        • 2.Qf6#
      • 1...f6
        • 2.Qf7#
      • 1...Rxh2!
  • Keys
    • 1.Rxc4!
      • threat
        • 2.Qxf7#
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Rxh2
        • 2.Re4#
      • 1...Rg2
        • 2.Re4#
      • 1...Bh5
        • 2.Rd4#
      • 1...Sg5
        • 2.Qf6#
      • 1...f6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(g);SBLOCK,XP(D)::QAB1(G),XP(j)
    • S(k);N_GUARD::QAR1(G)
    • S(k);CHECK,N_GUARD::QAR1(G),XS(k)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(G),XP(j)
      • Vars
        • S(k);CHECK,N_GUARD::QAR1(G),XS(k)
        • R(b);N_GUARD,XB(B)::R1(C),XB(g)
        • R(b);N_GUARD,P_PINQ(G)::R1(C),XB(g)
        • S(k);N_GUARD::QAR1(G)
        • P(j);::QAB1(G)
      • Refutation
        • B(c);
    • Try
      • R(C);
      • Threat
        • QAB1(G),XP(j)
      • Vars
        • S(k);CHECK,N_GUARD::QAR1(G),XS(k)
        • B(c);N_GUARD::R(C)+P(D),XB(g)
        • S(k);N_GUARD::QAR1(G)
        • P(j);::QAB1(G)
      • Refutation
        • R(b);P_PINQ(G)
    • Try
      • R(C);
      • Threat
        • QAB1(G),XP(j)
      • Vars
        • S(k);CHECK,N_GUARD::QAR1(G),XS(k)
        • S(k);N_GUARD::QAR1(G)
        • P(j);::QAB1(G)
      • Refutation
        • R(b);XB(B)
  • Actual
    • R(C);XP(d)
    • Threat
      • QAB1(G),XP(j)
    • Vars
      • S(k);CHECK,N_GUARD::QAR1(G),XS(k)
      • R(b);N_GUARD,XB(B)::B(A)+R(C)
      • R(b);N_GUARD,P_PINQ(G)::B(A)+R(C)
      • B(c);N_GUARD::B(A)+R(C)
      • S(k);N_GUARD::QAR1(G)
      • P(j);::QAB1(G)
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