MESON Chess Problem Database

Problem Display
PID: 241621 (b2R3r/p7/Q4B1N/KB1p2P1/4kp1n/p2p1R1N/3P2p1/5r1n w - - 0 1)

Ellerman, Arnoldo

Magyar Sakkvilag, 1949

b2R3r/p7/Q4B1N/KB1p2P1/4kp1n/p2p1R1N/3P2p1/5r1n

#2

10 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rxf4#
    • 1...Rb1
      • 2.Rxf4#
    • 1...Rc1
      • 2.Rxf4#
    • 1...Rd1
      • 2.Rxf4#
    • 1...Re1
      • 2.Rxf4#
    • 1...Rg1
      • 2.Rxf4#
    • 1...Rxf3
      • 2.Qe6#
    • 1...Sf2
      • 2.Rxf4#
    • 1...Sxf3
      • 2.Bxd3#
  • Tries
    • 1.Sg1?
      • threat
        • 2.Bxd3#
        • 2.Qe6#
      • 1...Rxf3
        • 2.Qe6#
      • 1...Sxf3
        • 2.Bxd3#
      • 1...Re8
        • 2.Bxd3#
        • 2.Rxe8#
      • 1...Bc6
        • 2.Bxd3#
      • 1...Sf2
        • 2.Qe6#
      • 1...Sg6
        • 2.Bxd3#
      • 1...Rxg1!
    • 1.Ba4?
      • threat
        • 2.Qxd3#
      • 1...Kxf3
        • 2.Qxd3#
      • 1...Rxf3
        • 2.Qe6#
      • 1...Sf2
        • 2.Rxf4#
      • 1...Sxf3!
    • 1.Bc6?
      • threat
        • 2.Qxd3#
      • 1...Kxf3
        • 2.Qxd3#
      • 1...Rxf3
        • 2.Qc4#
      • 1...Sf2
        • 2.Rxf4#
      • 1...Sxf3!
    • 1.Bd7?
      • threat
        • 2.Qxd3#
      • 1...Kxf3
        • 2.Qxd3#
      • 1...Rxf3
        • 2.Qe6#
      • 1...Sxf3
        • 2.Bf5#
      • 1...Sf2
        • 2.Rxf4#
      • 1...d4!
  • Keys
    • 1.Be8!
      • threat
        • 2.Qxd3#
      • 1...Kxf3
        • 2.Qxd3#
      • 1...Rxf3
        • 2.Qe6#
      • 1...Sxf3
        • 2.Bg6#
      • 1...Sf2
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R1(B),XP(g)
    • R(a);SBLOCK,XR(B)::QAR2(G)
    • S(b);S_CUTR(a)::R1(B),XP(g)
    • S(h);SBLOCK,XR(B)::B(E),XP(e)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XR(B)::QAR2(G)
        • S(h);XR(B)::B(E),XP(e)
        • B(k);::B(E),XP(e)
        • S(b);::QAR2(G)
        • S(h);::B(E),XP(e)
      • Refutation
        • R(a);XS(C)
    • Try
      • B(E);
      • Threat
        • QAB1(G),XP(e)
      • Vars
        • K(f);S_FLIGHT,XR(B)::QAR2(G),XP(e)
        • R(a);SBLOCK,XR(B)::QAR2(G)
        • S(b);S_CUTR(a)::R1(B),XP(g)
      • Refutation
        • S(h);XR(B)
    • Try
      • B(E);P_PINP(i)
      • Threat
        • QAB1(G),XP(e)
      • Vars
        • K(f);S_FLIGHT,XR(B)::QAR2(G),XP(e)
        • R(a);SBLOCK,XR(B)::QAR2(G)
        • S(b);S_CUTR(a)::R1(B),XP(g)
      • Refutation
        • S(h);XR(B)
    • Try
      • B(E);
      • Threat
        • QAB1(G),XP(e)
      • Vars
        • K(f);S_FLIGHT,XR(B)::QAR2(G),XP(e)
        • R(a);SBLOCK,XR(B)::QAR2(G)
        • S(h);N_GUARD,SBLOCK,XR(B)::B(E)
        • S(b);S_CUTR(a)::R1(B),XP(g)
      • Refutation
        • P(i);
  • Actual
    • B(E);
    • Threat
      • QAB1(G),XP(e)
    • Vars
      • K(f);S_FLIGHT,XR(B)::QAR2(G),XP(e)
      • R(a);SBLOCK,XR(B)::QAR2(G)
      • S(h);N_GUARD,SBLOCK,XR(B)::B(E)
      • S(b);S_CUTR(a)::R1(B),XP(g)
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