MESON Chess Problem Database

Problem Display
PID: 64749 (Q1r1n2q/2P1Pb2/N1N4p/3k1P2/3P4/B2P1n1K/6R1/1r2R2B w - - 0 1)

Maleika, Gerhard

2nd Prize, diagrammes, 1981

Q1r1n2q/2P1Pb2/N1N4p/3k1P2/3P4/B2P1n1K/6R1/1r2R2B

#2

13 + 8

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1+
      • 2.Rgxg1#
    • 1...Sd2
      • 2.Rxd2#
    • 1...Sh2
      • 2.Rxh2#
    • 1...Sg5+
      • 2.Rxg5#
  • Tries
    • 1.Scb4+?
      • 1...Kd6
        • 2.Qc6#
      • 1...Kxd4!
    • 1.Bc5?
      • threat
        • 2.Scb4#
      • 1...Sg1+
        • 2.Rgxg1#
      • 1...Sg5+
        • 2.Rxg5#
      • 1...Rb4
        • 2.Saxb4#
        • 2.Scxb4#
      • 1...Rxa8!
    • 1.Rb2?
      • threat
        • 2.Bxf3#
      • 1...Qxd4
        • 2.Scb8#
      • 1...Rxe1
        • 2.Rb5#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sd6
        • 2.Sab4#
      • 1...Sf6
        • 2.Re5#
      • 1...Bh5!
    • 1.Rg4?
      • threat
        • 2.Bxf3#
      • 1...Qxd4
        • 2.Rxd4#
      • 1...Rxe1
        • 2.Scb8#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sd6
        • 2.Scb4#
      • 1...Sf6
        • 2.Re5#
      • 1...Rb4!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Bxf3#
      • 1...Qxd4
        • 2.Scb4#
      • 1...Rxe1
        • 2.Sab4#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sf6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(b);CHECK,OGATEB::B(B)+R(C),XS(b)
    • S(b);OGATEB::B(B)+R(C),XS(b)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(M)
      • Refutation
        • K(c);P-FLIGHT,XP(G)
    • Try
      • B(D);
      • Threat
        • QAB(M)+S(J),DCHECK
      • Vars
        • S(b);CHECK,OGATEB::B(B)+R(C),XS(b)
      • Refutation
        • R(f);XQ(M)
    • Try
      • R(C);P_PINS(b)
      • Threat
        • B(B),XS(b)
      • Vars
        • Q(h);SBLOCK,XP(G)::QAB(M)+S(J)
        • R(a);N_GUARD,XR(A)::R(C)
        • Q(h);N_GUARD::R1(A),XQ(h)
        • S(g);SBLOCK::S(I)
        • S(g);S_CUTQ(h)::R1(A)
      • Refutation
        • B(e);
    • Try
      • R(C);P_PINS(b)
      • Threat
        • B(B),XS(b)
      • Vars
        • Q(h);OGATE,XP(G)::R1(C),XQ(h)
        • R(a);N_GUARD,XR(A)::QAB(M)+S(J)
        • Q(h);N_GUARD::R1(A),XQ(h)
        • S(g);SBLOCK::QAB(M)+S(J),DCHECK
        • S(g);S_CUTQ(h)::R1(A)
      • Refutation
        • R(a);
  • Actual
    • R(C);P_PINS(b)
    • Threat
      • B(B),XS(b)
    • Vars
      • Q(h);SBLOCK,XP(G)::QAB(M)+S(J),DCHECK
      • R(a);N_GUARD,XR(A)::S(I)
      • Q(h);N_GUARD::R1(A),XQ(h)
      • S(g);N_GUARD::R1(C),XS(g)
      • S(g);S_CUTQ(h)::R1(A)
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